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it 做形式主语单项选择题练习题（学生版）
一、单项选择题（50 道）
1. It is ______ for us to finish our homework on time.
A. important B. importantly C. importance D. unimportantly
2. It is kind ______ you to help the old man cross the street.
A. for B. of C. to D. with
3. It is difficult ______ him to solve this math problem.
A. of B. to C. for D. with
4. It is ______ to learn a foreign language well in a short time.
A. possible B. possibly C. impossible D. impossibly
5. ______ is necessary for everyone to keep healthy.
A. This B. That C. It D. He
6. It is a good idea ______ a walk after dinner.
A. take B. to take C. taking D. takes
7. It is said ______ he will come to our school next week.
A. that B. which C. what D. who
8. It ______ that she missed the bus this morning.
A. happen B. happens C. happened D. happening
9. It doesn’t matter ______ you are late or not.
A. that B. if C. whether D. what
10. It is clear ______ he is good at English.
A. that B. where C. when D. how
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11. It is no use ______ about the bad weather.
A. complain B. complaining C. to complain D. complained
12. It is ______ of you to give up your seat to the kid.
A. polite B. politely C. impolite D. impolitely
13. It is essential ______ us to learn basic computer skills.
A. of B. for C. with D. to
14. ______ is impossible for a student to know everything.
A. This B. That C. It D. There
15. It is surprising ______ he passed the difficult exam.
A. that B. if C. whether D. how
16. It is wise ______ her to ask the teacher for help.
A. for B. of C. to D. with
17. It is dangerous ______ alone at night.
A. go out B. going out C. to go out D. went out
18. It is reported ______ the city will hold a sports meeting next year.
A. that B. what C. which D. who
19. It ______ to me that I left my keys at home.
A. occur B. occurs C. occurred D. occurring
20. It is necessary that we ______ hard every day.
A. study B. studies C. studied D. studying
21. It is no good ______ too much time playing games.
A. spend B. spending C. to spend D. spent
22. It is kind ______ him to help me with my homework.
A. for B. of C. at D. in
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23. It is difficult ______ finish the work in two days.
A. for we to B. for us to C. of us to D. of we to
24. It is obvious ______ he didn’t tell the truth.
A. that B. which C. what D. when
25. ______ is useful to learn a second language.
A. This B. That C. It D. He
26. It is strange ______ she didn’t come to school today.
A. that B. if C. whether D. where
27. It is advisable that we ______ early tomorrow morning.
A. leave B. leaves C. left D. leaving
28. It is harmful ______ us to smoke.
A. for B. of C. to D. with
29. It is said that ______ will rain tomorrow.
A. this B. that C. it D. he
30. It happened that I ______ my old friend in the park.
A. meet B. meets C. met D. meeting
31. It is important ______ we should protect the environment.
A. that B. if C. whether D. what
32. It is useless ______ to persuade him to change his mind.
A. try B. trying C. to try D. tried
33. It is polite ______ you to say “thank you” when you get help.
A. for B. of C. to D. at
34. It is easy ______ him to play the piano.
A. of B. for C. with D. in
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35. It is clear ______ she is the best student in our class.
A. that B. who C. what D. where
36. ______ is a pity that you missed the concert.
A. This B. That C. It D. There
37. It is reported ______ many students will take part in the competition.
A. that B. which C. what D. who
38. It doesn’t matter ______ you take the bus or walk.
A. that B. if C. whether D. how
39. It is good ______ every morning.
A. exercise B. exercising C. to exercise D. exercised
40. It is foolish ______ him to make such a mistake.
A. for B. of C. to D. with
41. It is impossible ______ us to finish the work ahead of time.
A. of B. for C. with D. to
42. It is believed ______ the earth goes around the sun.
A. that B. what C. which D. who
43. It is essential that we ______ careful in class.
A. be B. is C. are D. was
44. It is no use ______ about the past.
A. worry B. worrying C. to worry D. worried
45. It is kind ______ you to invite me to your birthday party.
A. for B. of C. at D. in
46. It is difficult ______ solve this problem without help.
A. for me to B. of me to C. for I to D. of I to
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47. It is surprising ______ he can speak three languages.
A. that B. if C. whether D. how
48. ______ is necessary to drink enough water every day.
A. This B. That C. It D. There
49. It is said that he ______ to America next month.
A. go B. goes C. will go D. went
50. It happened that we ______ the same school.
A. attend B. attends C. attended D. attending
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