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

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

15. It’s the third time ＿＿＿＿＿ arrived late this month.

A.that you　　　　　　 B.when you

C.that you’ve　　　　　 D.when you’ve

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

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

12. ＿＿＿＿being March 12th, they planted trees on the hill.

A.That　B.It is　 C.It　　D.This

11. --　Have you ever seen a whale alive?

--　Yes, I’ve seen ＿＿＿.

A.that　B.it　　C.such　　D.one

10. ＿＿＿＿four years since I joined the army.

A.There was　　　 B.There is　　 C.It was　　 D.It is

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

8. He lived in poverty, and he couldn’t help ＿＿＿.

A.so　　　　 B.such　　　　 C.it　　　　 D.that