2020-2021小学英语试卷完形填空题分类汇编(及答案)
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
2020-2021小学英语试卷完形填空题分类汇编(及答案)
一、完形填空
1.完形填空完形填空
Mary's family is 1 at home. His father, Mr. Smith, issitting 2 a chair near the window and 3 anewspaper. Mary is in her room. She is listening to the radio. Peter and John,Mary's 4 ,are not playing. They are 5 their new bikes. Where is Mrs. Smith?She is in the garden. She is 6 the flowers. Kate, Mary's sister, ishelping her mother.
1. A. both B. all C. each
2. A. in B. near C. at
3. A. reading B. seeing C. looking
4. A. brother B. father C. friends
5. A. buying B. fixing C. cleaning
6. A. coloring B. eating C. watering
【答案】(1)B;(2)A;(3)A;(4)B;(5)C;(6)C;
【考点】完型填空
【解析】【分析】(1)句意:玛丽的家人……在家里。
A两个都,B全部,都,指三者以上,C每个,感觉本句句意指一家人,三者以上,故答案为B.
(2)句意:他的父亲史密斯先生坐……靠窗的椅子……报纸。
in a chair在椅子上,故答案为A.
(3)句意:他的父亲史密斯先生坐在靠窗的椅子上……报纸。
读书或报纸,用动词read,故答案为A.
(4)句意:彼得和约翰,玛丽的……,不是在玩。
指彼得和约翰,玛丽三个人共同的家人,A兄弟,不符,B父亲,符合,C朋友,不符,故答案为B.
(5)句意:他们……他们的新自行车。
根据句意是新自行车,不用修理,A正在买,不符,B正在修理,不符,C正在清洗,符合,故答案为C.
(6)句意:她在花园里。
她正在……花。
根据本句句意,在花园浇花,A正在上色,B正在吃,C正在浇,故答案为C.
【点评】本题考查了完形填空,先翻译短文,然后根据短文内容,选出恰当的选项填空,使句意完整。
2.完形填空完形填空
Most(大多数的)children like 1 TV on TV, they can learn a lot. They can see and know many things 2 their country and the world. Of course, they can also 3 over the radio(收音机), but they can learn better and more easily with TV. Why? Because they can hear and watch at the 4 time. But they can't see anything over the radio.
Many children often watch TV at the 5 . They are very busy with their lessons on weekdays. But a few children watch TV every night. They go to bed very 6 . So, they can't have a good rest. How about you, my friend?
1. A. going to watch B. watching C. will watches
2. A. for B. about C. too
3. A. write B. study C. dance
4. A. same B. different C. both
5. A. weekdays B. Friday C. weekend
6. A. late B. early C. busy
【答案】(1)B;(2)B;(3)B;(4)A;(5)C;(6)A;
【考点】完型填空
【解析】【分析】这是一篇谈论孩子们看电视问题的短文。
(1)句意:大多数孩子们喜欢......电视,他们可以学到很多东西。
这里是短语like doing sth(喜欢做某事),C选项是将来时,不合适,A选项“去电视上看电视”意思啰嗦,只有B 选项是“观看电视”意思合适。
故答案为:B.
(2)句意:他们可以看到或了解到许多.....他们国家和世界的事情。
A选项是:为了,B选项是;关于,C选项是:太,是副词,不修饰名词。
根据句意,用about合适。
故答案为:B.(3)句意:当然他们可以通过收音机.....,通过电视他们学的更多更容易。
根据后半句的learn“学习”可知这里用study“学习”。
故答案为:B.
(4)句意:因为他们可以......看和听。
这里是短语“同时at the same time”. A选项正确。
故答案为:A.
(5)句意:许多孩子们经常在.....看电视。
根据下一句的weekdays可知这里是weekend. 故答案为:C.
(6)句意:他们上床睡觉很......。
根据下句“他们休息不好。
”可知这里选择late“晚”。
故答案为:A.
【点评】这是考查完型天空的题目。
要灵活运用所学的知识。
3.完形填空完形填空。
My name is Bai Ling. Welcome to my home. We have a new flat. It's on the 1 floor. There 2 three bedrooms, a kitchen, two bathrooms and a living room. Look! This is my own bedroom. It's not big 3 nice. There is a desk, a chair, a bed and a big closet in my room. And you can 4 some pictures and a mirror on the wall and a computer on the desk. Oh! What's that behind the end table? 5 a new air-conditioner. Do you like my bedroom?
1. A. two B. second C. twice
2. A. am B. is C. are
3. A. and B. or C. but
4. A. see B. sees C. to see
5. A. It's B. Its C. It
【答案】(1)B;(2)C;(3)C;(4)A;(5)A;
【解析】【分析】(1)句意:它在二楼。
几楼,是用序数词表示,故选B。
(2)there be结构中的后面的名词是three bedrooms复数,故选C。
(3)前否后肯,意思上存在相反含义,用but表转折,故选C。
(4)情态动词can的动词一定是原形,故选A。
(5)对问句中that回答用代词it,且谓语不变,故选A。
4.完形填空阅读短文,选择适当的单词填空。
I am Andy. I usually have lunch 1 school. Our school menu sounds good. Today is Monday. We have egg soup and beef 2 Mondays. My favorite vegetable 3 cabbage, it is fresh. I also like fruit very much. 4 are my favorite fruit. They are sweet and tasty. Mom says I should eat more vegetables and fruit, because I am too heavy now. What about 5 ? What is your school menu? What's your favorite food?
1. A. in B. on C. at
2. A. in B. on C. at
3. A. am B. is C. are
4. A. Melons B. Melon C. melons
5. A. you(主格) B. your C. you(宾格)
【答案】(1)C;(2)B;(3)B;(4)A;(5)C;
【解析】【分析】(1)考查地点方位名词:in+大地方;on+有接触面的地点;at+小地方。
选C。
(2)星期前用介词on。
故选B。
(3)句子的主语是vegetable单数,故选B。
(4)由位于are可知主语是复数名词,且是句子的第一个单词,所以要大写首字母,故选A。
(5)about是介词,故选择的是宾格形式的you。
故选C。
5.完形填空阅读并选择正确答案
(Mr Xia is talking to Miss Wang 1 his children. )
Wang: How 2 children are there in your family, Mr Xia?
Xia: Three. I 3 three children.
Wang: 4 are they?
Xia: My daughter is 14. My sons are 11 and 7.
Wang: What are they like?
Xia: My daughter Xia Xue is pretty. And she does well 5 school.
Wang: What are your sons like?
Xia: Liu Xing is an eleven-year-old boy. He is very clever and funny. He is a naughty boy, but he has a lot of fun.
Wang: 6 he good at school, too?
Xia: No, he 7 like studying. He likes playing 8 .
Wang: What 9 the seven-year-old boy? What's his 10 ?
Xia: Xia Yu. He looks like me. Look! I have a photo here.
Wang: Oh, they're lovely!
1. A. to B. with C. about
2. A. many B. much C. old
3. A. there are B. have C. has
4. A. What B. How old C. Where
5. A. around B. at C. to
6. A. Is B. Are C. Am
7. A. isn't B. don't C. doesn't
8. A. basketball B. the football C. violin
9. A. are B. about C. colour
10. A. name B. mother C. job
【答案】(1)C;(2)A;(3)B;(4)B;(5)B;(6)A;(7)C;(8)A;(9)B;(10)A;
【解析】【分析】这是一篇谈论孩子的对话。
(1)句意:夏先生正在和王女士谈论......他的孩子的事。
根据对话内容,这是短语talk about“谈论关于......的事”。
故答案为:C.
(2)根据答语“3个”可知问句意思是:夏先生你们家有几个孩子?这里用短语How many“多少个”。
故答案为:A.
(3)句意:我......三个孩子。
根据前面问句和答语“你们家有几个孩子?三个。
”本句意思是:我们家有三个孩子。
句子主语是I, 谓语动词用have, 故答案为:B.
(4)句意:他们......?根据答语“我女儿14岁。
儿子11岁和7岁。
”可知问句问年龄,用短语How old, B选项正确。
故答案为:B.
(5)句意:她.....学校学习很好。
根据意思提示,这是短语at school“在学校”。
故答案为:B.
(6)句意:他在学校也学习好......?根据答语no“不”可知这是一般疑问句,句子主语是第三人称单数,谓语动词用Is合适。
故答案为:A.
(7)句意:根据上句“他在学校也学习好吗?不。
”可知本句意思是:他不喜欢学习。
句子主语四第三人称单数,谓语动词是实义动词,这里是否定句,用助动词doesn't. 故答案为:C.
(8)句意:他喜欢......。
表示从事球类运动时,球类前面不用冠词,因此A选项可用,B 选项不合适,表示演奏乐器时,乐器前面要用定冠词the,C选项不合适。
故答案为:A.(9)句意:那位七岁的男孩呢?这里是询问情况,用what about,如果用are和主语第三人称单数不匹配,what colour问颜色,不合适。
故答案为:B.
(10)根据答语“夏雨”可知本句意思是“他的名字叫什么?”A选项合适。
故答案为:A.
【点评】这是考查知识综合运用的题目。
要掌握上下文句子的意思,然后根据提示来选择
合适的选项。
6.完形填空完形填空。
Amy is my 1 classmate. She's 10. She often has 2 at school. She's 3 USA. Her favourite 4 is Sunday. Because sometimes Amy and I can go 5 the nature park on Sunday. There are many 6 and a 7 in it. The 8 is clean. The 9 is fresh. We like the nature park. 10 pretty.
1. A. small B. big C. new D. old
2. A. food B. lunch C. drink D. classes
3. A. come B. from C. come from D. in
4. A. subject B. month C. day D. weak
5. A. in B. with C. to D. for
6. A. trees B. tree C. flower D. water
7. A. rabbits B. rabbit C. river D. flower
8. A. grass B. flower C. tree D. water
9. A. flower B. air C. water D. tree
10. A. It is B. He is C. She is D. They are
【答案】(1)C;(2)B;(3)B;(4)C;(5)C;(6)A;(7)C;(8)D;(9)B;(10)A;
【解析】【分析】大意:介绍主人公的新同学Amy以及她最喜欢的自然公园。
(1)句意是艾米是我的新同学。
根据后文内容可知艾米来自美国属于留学生,应是新生new。
big和small不能用来修饰人。
故选C。
(2)句意是她经常在学校吃午餐。
根据学生在学校活动内容可知,随便吃食物food是不
允许的。
午餐lunch可以。
故选B。
(3)句意是她来自美国。
根据句意可知,要使用介词固定搭配be from表达来自于。
故选B。
(4)句意是她最爱的一天是周日。
根据句意可知,要使用day来表达一天。
故选C。
(5)句意是艾米和我周日去自然公园。
根据句意可知,要使用go to表达去哪里。
故选C。
(6)句意是公园里有许多树木和一条小河。
根据句意可知,要使用many修饰可数名词trees表达许多树木。
故选A。
(7)句意是公园里有许多树木和一条小河。
根据公园里不能只有一只兔子和一朵花,因此
要使用river来表达一条小河。
故选C。
(8)句意是自然公园里的水是干净的。
根据前句内容可知,此处应是强调小河河水质量。
要使用water来表达水。
故选D。
(9)句意是自然公园里空气是新鲜的。
根据生活常识可知,自然公园里空气是新鲜的。
因
此要使用air表达空气。
故选B。
(10)句意是我喜欢自然公园。
它是美丽的。
根据句意可知,要使用代词it来指代自然公园。
故选A。
【点评】考查完型填空。
注意根据句意来选择正确的选项。
7.完形填空阅读短文,选择最恰当的答案。
The Wangs are talking 1 their holiday. They want to visit Hainan Island. It is in the 2 of China. There are 3 interesting places on Hainan Island. They can see the blue 4 . They can play on the 5 , too. They are 6 by plane. It is 7 but fast to go by plane. It is their first time to 8 a plane. They are so 9 . They are sure to have 10 good time.
1. A. with B. to C. about
2. A. north B. south C. west
3. A. any B. many C. some
4. A. first B. sea C. pond
5. A. sea B. path C. beach
6. A. going there B. go there C. go to there
7. A. dear B. cheap C. nice
8. A. by B. have C. take
9. A. sad B. worry C. excited
10. A. a B. an C. /
【答案】(1)C;(2)B;(3)B;(4)B;(5)C;(6)A;(7)A;(8)C;(9)C;(10)A;
【解析】【分析】(1)句意:王氏一家人正在谈论他们的假期。
talk with sb和某人谈话,talk to sb对某人说,谈论某事talk about sth,根据holiday指事情,故答案为C.
(2)句意:他们想参观海南岛。
它在中国的……部。
海南岛在中国的南部south,故答案为B.
(3)句意:海南岛上有……有趣的地方。
许多many,故答案为B.
(4)句意:他们可以看到蓝色的……。
the冠词,修饰名词,大海sea,故答案为B.
(5)句意:他们也可以在……上玩。
海滩beach,故答案为C.
(6)句意:他们将乘飞机……。
本句是现在进行时,构成be doing,going there去那里,
故答案为A.
(7)句意:坐飞机很……,但速度很快。
根据常识,交通工具中乘飞机最贵,dear贵,故
答案为A.
(8)句意:这是他们第一次……飞机。
it is first time to do sth第一时间做某事,to后面接动
词原形,take乘,是动词,by乘,是介词,故答案为C.
(9)句意:他们太……了。
根据前面的句意,乘飞机是件兴奋的事情,excited兴奋的,故
答案为C.
(10)句意:他们一定会玩得很开心。
have a good time玩得很开心,固定搭配,故答案为A.
【点评】本题考查了完形填空,注意先翻译短文,然后根据短文内容,选出恰当的选项填
空。
8.完形填空读—读,填上适当的单词完成短文
My name is Leo. I am eight years old. I am 1 the UK. I like 2 model aeroplanes.
I want to be a pilot. I 3 to fly an aeroplane.
There are six people in my family. My parents are both 4 . I have two brothers, John and Jack. They are both students at middle school. John is good at 5 . He wants to help people at sea in the future. Jack paints very 6 . He wants to be a painter. I have a sister too. Her name is Daisy. She likes 7 and dancing Very much. She 8 to be a singer.
1. A. of B. from C. in
2. A. make B. makes C. making
3. A. wants B. likes C. want
4. A. teacher B. teaches C. teachers
5. A. swimming B. swims C. swim
6. A. good B. much C. well
7. A. sing B. singing C. sings
8. A. wants B. want C. like
【答案】(1)B;(2)C;(3)C;(4)C;(5)A;(6)C;(7)B;(8)A;
【解析】【分析】这是介绍Leo以及他的家人情况的短文。
(1)句意:我......英国。
根据句意这是短语be from"来自",这是固定搭配,故答案为:B.(2)句意:我喜欢......飞机模型。
这里是短语like doing sth(喜欢做某事),like后面跟动词的ing形式,A选项是动词原形,B选项是第三人称单数,只有C选项是ing形式。
故答案为:C.
(3)句意:我......开飞机。
want to do sth意思是:想要做某事,like to do sth是:喜欢做某事。
根据句意用want合适,因为主语是第一人称,谓语动词want用原形即可。
C选项正确。
故答案为:C.
(4)句意:我的父母两个人都是......。
A选项是:老师(单数), B选项是:教(单三形式),C选项是:老师(复数)。
根据both“两者都”可知用复数合适。
故答案为:C.
(5)句意:约翰擅长......。
跟在介词at后面动词要用ing形式,A选项是:ing形式,B选项是:单三形式,C选项是:动词原形。
A选项正确。
故答案为:A.
(6)句意:杰克画画画的很......。
这里修饰动词,用副词。
A选项是形容词“好的”,B选项是:许多(形容词),C选项是:很好。
故答案为:C.
(7)句意:她非常喜欢......和跳舞。
这里是like doing sth(喜欢做某事),like后面跟动词的ing形式,A选项是:动词原形,B选项是ing形式,C选项是:单三。
B选项正确。
故答案为:B.
(8)句意:她......成为一名歌手。
根据句意这里是短语want to do sth“想要做某事”。
句子主语是第三人称单数,谓语动词用单三形式。
A选项是:单三形式,B选项是动词原形,C 选项是:喜欢。
A选项正确。
故答案为:A.
【点评】这是考查完型填空的题目。
首先通读短文,然后根据上下文意思和固定搭配来选
择合适的选项完成短文。
9.完形填空完形填空
Tell me what you are going to do 1 Sunday morning, Mike. Mr Zhang asks, "I'm going to see 2 new film. It's an English film 3 the life of the students in America. Bill tells me it's 4 interesting."
"After seeing the film, what are you going to do?" Mr Zhang wants 5 " I'm going to read Chinese." Mike says. "Do you like it?" asks Mr Zhang. "Chinese is not 6 for me, but I like it very much. I'm going 7 hard at it. After lunch I'm going to do my homework. I think I 8 do it better than before." "Then 9 about Sunday evening?" Mr. Zhang asks, "After supper I'm going to help Han Mei 10 her English. She wants my help." Mike says.
"You are going to have a busy day, aren't you?" says Mr Zhang.
1. A. at B. on C. in D. /
2. A. a B. an C. the D. /
3. A. of B. with C. for D. about
4. A. much B. most C. very D. many
5. A. know B. knowing C. knows D. to know
6. A. easy B. difficult C. good D. bad
7. A. to working B. work C. to works D. to work
8. A. am B. am going C. can D. may
9. A. when B. where C. who D. what
10. A. does B. doing C. with D. /
【答案】(1)B;(2)A;(3)D;(4)C;(5)D;(6)A;(7)B;(8)C;(9)D;(10)C;
【解析】【分析】(1)句意:告诉我……星期日早上你打算做什么,迈克。
在具体的某天
用介词on,故选B.
(2)句意:我要去看……新电影。
a一个,用于修饰辅音音素开头的单数名词,an一个,
用于修饰元音音素开头的单数名词,new是以辅音音素开头的单词,故选A.
(3)句意:这是一部……美国学生生活的英语电影。
of的,with和,forw为都与题意不符,about关于,与题意相符,故选D.
(4)句意:比尔告诉我这……有趣。
interesting有趣的,是形容词,much/many修饰名词,most修饰形容词最高级,very非常,修饰形容词原级,故选C.
(5)句意:张老师想……。
want to do sth想做某事,want to know想知道,故选D.
(6)句意:中文对我来说并不容易,但我非常喜欢。
根据前半句与后半句是转折关系,后
半句非常喜欢中文,前半句表示不容易,故选A.
(7)句意:我将努力……它。
本句是一般将来时,be going to后面接动词原形,work hard
努力学习,故选B.
(8)句意:我想我……比以前做得更好。
情态动词后面接动词原形,can能,may可以,根
据句意,可知can符合题意,故选C.
(9)句意:那么星期日晚上怎么样?what/how about+名词/动名词/代词,固定短语,表示……怎么样?when何时,where在哪,who谁都不符,故选D.
(10)句意:晚饭后,我要帮助Han Mei学英语。
help with sth帮助某人做某事,故选C.
【点评】本题考查了完形填空,先翻译短文,然后根据句意选出恰当的单词填空,使短文
完整。
10.完形填空完形填空。
This 1 my room. It is a 2 nice room. The window 3 big and the walls 4 white. Near the window there is a red desk. It is for me. 5 the desk, there are some books and 6 pencil-box . 7 the back wall there are some pictures and 8 map of China.
There is 9 bed. It is near the door. There is a chair behind the bed. There is a box and a pair of new shoes 10 the bed.
1. A. are B. am C. is D. be
2. A. much B. very C. too D. now
3. A. is B. are C. am D. /
4. A. are B. is C. be D. /
5. A. On B. on C. in D. under
6. A. a B. two C. some D. at
7. A. in B. For C. On D. At
8. A. / B. an C. a D. some
9. A. an B. a C. not D. the
10. A. in B. an C. under D. from
【答案】(1)C;(2)B;(3)A;(4)A;(5)A;(6)A;(7)C;(8)C;(9)B;(10)C;
【解析】【分析】(1)句意:这……我的房间。
this是单数形式,后跟is,故答案为C。
(2)句意:它是一个……漂亮的房间。
nice是形容词,前面用副词修饰,故答案为B。
(3)句意:窗户……大的。
window是单数形式,后跟is,故答案为A。
(4)句意:墙……白色的。
walls是复数形式,后跟are,故答案为A。
(5)句意:……桌子,有一些书。
在桌子上介词用on,故答案为A。
(6)句意:桌子上有一些书和……铅笔。
pencil-box是单数形式,前面用不定冠词a,故答
案为A。
(7)句意:……后面的墙上有一些画。
在墙上介词用on,故答案为C。
(8)句意:和……中国地图。
map是单数可数名词,前面用不定冠词a,故答案为C。
(9)句意:有……床。
bed是单数可数名词,前面用不定冠词a,故答案为B。
(10)句意:有一个箱子和一双鞋在床……根据选项是在床下,介词用under,故答案为C。
【点评】考查完形填空,根据句意和选项意思选择答案,注意人称、数和时态。
11.完形填空完型填空。
I am 1 English boy. My 2 is Mike. I am twelve. My sister's name is Ann and we
are students. My mother 3 a teacher. She's a Chinese teacher. My brother's name is Jim.
He's five. 4 father isn't here. He's 5 Xinjiang. I think my family is a good one.
1. A. a B. an C. the
2. A. school B. name C. home
3. A. are B. am C. is
4. A. Our B. We C. Ours
5. A. on B. in C. at
【答案】(1)B;(2)B;(3)C;(4)A;(5)B;
【解析】【分析】短文大意:我是一名英国男孩。
我的名字是迈克。
我十二岁了。
我妹妹
的名字是安,我们都是学生。
我的妈妈是一名教师。
她是一名语文老师。
我弟弟的名字是
吉姆。
他五岁了。
我们的爸爸不在这。
他在新疆。
我认为我们是很好的一家。
【点评】本题考查的是学生综合运用英语的能力,需要学生有一定的语言积累。
12.完形填空完形填空。
My name is Li Hua. I'm thirteen. I'm a middle school student. I am 1 Class Five, Grade One. My English teacher 2 Mr Lin. He is 3 old teacher. I 4 a pen, a ruler
and two 5 in my pencil-box. I have a bike, 6 .
Liu Ping is in my class. She is a girl. We 7 good friends. She is not 8 today. I
think she is at home. Look! Here is a 9 . But it is not my book. I think it is 10 book.
1. A. in B. at C. do D. not
2. A. are B. am C. is D. /
3. A. a B. an C. this D. very
4. A. am B. think C. know D. have
5. A. boxes B. pencils C. buses D. desk
6. A. too B. or C. much D. very
7. A. have B. am C. are D. all
8. A. right B. where C. at home D. at school
9. A. licence B. book C. picture D. map
10. A. Liu Ping B. Liu Pings C. Liu Ping's D. Liu Pings'
【答案】(1)A;(2)C;(3)B;(4)D;(5)B;(6)A;(7)C;(8)D;(9)
B;(10)C;
【解析】【分析】大意:介绍主人公李华的班级,老师还有同学刘萍的情况。
(1)根据句意我在一年五班可知,要使用介词in表达在某班。
故选A。
(2)根据句意我的英语老师是林先生。
teacher是名词单数,因此be动词要使用is。
故选
C。
(3)根据句意他是一位老教师以及形容词old首字母发音属于元音因素可知,要使用不定冠词an来修饰。
故选B。
(4)根据句意是我有一只钢笔,一把格尺还有两只铅笔在我的文具盒中可知,要使用动词have表达拥有。
think是动词思考;know是动词,知道。
两者均不符合语句句意。
故选D。
(5)根据关键词two两只可知,要修饰可数名词复数形式。
pencils铅笔,属于文具类名词可以被放在铅笔盒里。
boxes属于盒子的复数,buses属于汽车的复数,desk桌子,属于名词单数。
三者均不能被放在文具盒中。
故选B。
(6)根据句意我也有辆自行车可知,要使用副词too表达也的含义。
使用时要加逗号与句子分开。
故选A。
(7)根据句意我们是好朋友可知,主语是复数我们,be动词要使用复数形式are。
have是动词,拥有。
all是形容词所有的,全部的。
二者均不符合句意。
故选C。
(8)根据后句句意I think she is at home我想她今天在家里可以推断林萍她今天不在学校可知,要使用at school表达在学校。
故选D。
(9)根据后句But it is not my book句意它不是我的书可以推断此句应是表达一本书book。
故选B。
(10)根据此空前句But it is not my book可以推测不是主人公的书应该是林萍的Liu ping's。
这里使用名词所有格来表达某人的物品。
故选C。
【点评】考查完型填空。
注意根据句意选择合适的单词填空。