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Fill in the blanks in its proper form (词性变化):
1.Nothing is much ___more precious___ (precious) than life.
2.You shouldn’t get __impatient____ (patience) as you are a teacher.
3.Emma looks ___puzzled___(puzzle) when she hears the news.
4.The factory has fixed all the ____equipment___ (equip).
5.He is good at ___chemistry____(chemical).
6.Our ___products____(product) are believed to be the top ones.
7.He was told to ___explain__(explanation) his mistake in public.
8.He has bought a new __electric___(electricity) lamp.
9.She couldn’t tell us a reasonable ___explanation___(explain).
10.You will see some ___chemical___(chemist) changes in the tube soon.
11.This water treatment plant __produces___(product) clean water every day.
12.___Unluckily__, (luck) we missed the train.
13.Trees are our best pollution __fighters_____(fight).
14.There are so many trees around the house that it’s nearly __invisible__
(invisible)
15.Jenny behaves quite __politely___(polite). We like her very much.
16.This magazine is published ___monthly_ (month).
17.Carbon monoxide is an ___invisible____(visible) gas.
18.It is __impolite__(polite) of you to serve yourself without asking.
19.Pay special care to __electrical_____(electric) appliances in the kitchen.
20.He is using an ___electronic__(electricity) calculator now.
21.The machine was very __powerful___(power), but it’s also rather expensive.
22.Could you find out the __explanations_____(explain) of these English
words?
23.Sea water is not __drinkable_____(drink).
24.Teachers ask us to have more ___patience_____(patient) in learning languages.
25.It is fun to skate on __frozen___(freeze) rivers in __freezing___
weather.(freeze)
26.We cleaned the classroom __thoroughly_____(thorough).
27.The water ___treatment____(treat) plant produces clean water.
28.The rice ___cookers_____(cook) help make rice easily.
29.If you wait for an hour for the taxis, you may get __impatient___(patience).
30.The bedroom needs a thorough ___cleaning___(clean).
31.Hong Kong is one of the _enjoyable___(enjoy) __cities___(city) in China.
32.Trees produce oxygen to keep us __alive___.(lively)
33.What did the two men ____fight____(fighter) about just now?
34.Eating too much sweets is ___harmful__(harm) to your teeth.
35.The child is ___lively___(live) as well as healthy.
36.Mary works so ___hard____(hard) that she is the top student.
37.Body language is a good way of __communication____(communicate).
38.There are no __living_____(live) things on the moon.
39.The chemistry teacher shows us some ___chemicals___(chemical) in the class.
40.I prefer this film because it is ___more interesting_____(interesting) than that
one.