从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. The boy became fatter and fatter each day and ＿＿＿made his parents sad.
A.which B.what C.he D.it
2. Someone is ringing the doorbell. Go and see ＿＿＿＿＿＿.
A.who is he B.who he is
C.who is it D.who it is
3. In fact, ＿＿＿is a hard job for the police to keep order in an important football match.
A.this B.that C.there D.it
4. Tom’s mother kept telling him that he should work harder, but ＿＿＿didn’t help.
A.he B.which C.she D.it
5. Does＿＿＿matter whether he can finish the job on time?
A.this B.that C.he D.it
6. ＿＿＿used to be thought that the earth was square.
A.He B.What C.It D.That
7. I took ＿＿＿for granted that he would believe in us.
A.that B.the thing C.it D.this
8. He lived in poverty, and he couldn’t help ＿＿＿.
A.so B.such C.it D.that
9. We had to be patient because it＿＿＿some time ＿＿＿we got the full results.
A.has been ； since B.had been ； until
C.was； after D.would be ； before
10. ＿＿＿＿four years since I joined the army.
A.There was B.There is C.It was D.It is
11. —— Have you ever seen a whale alive?
—— Yes, I’ve seen ＿＿＿.
A.that B.it C.such D.one
12. ＿＿＿＿being March 12th, they planted trees on the hill.
A.That B.It is C.It D.This
13. —— Was that the new comer who walked by?
—— ＿＿＿＿＿.
A.It must be that B.It must have been
C.He must be D.This must have been
14. Our classroom is very clean. Do you know who＿＿＿cleaned it?
A.was it that B.it was that
C.was it who D.he was
15. It’s the third time ＿＿＿＿＿ arrived late this month.
A.that you B.when you
C.that you’ve D.when you’ve
16. He said, “＿＿＿＿＿ a long way to school. ＿＿＿＿＿ a long way to go yet before we arrived.”
A.It is ； There is B.There is ； It is
C.It is ； It is D.There is； There is
17. ＿＿＿＿＿＿ for the free tickets, I would not have gone to the films so often.
A.If it is not B.Where it not
C.Had it not been D.If they were not
18. She finds ＿＿＿＿＿＿ boring ＿＿＿＿＿＿ at home.
A.it； staying B.that； being stayed
C.this； to stay D.it； stayed
19. —— Few children are as bright as he is, and also, he works very hard.
—— It’s no ＿＿＿＿＿ that he always gets the first place in any examination.
A.question B.doubt C.problem D.wonder
20. Now then, children. It’s high time you ＿＿＿＿＿＿ and dressed.
A.washed B.should wash
