20. People in the village believed that he has died ____ they saw him in the flesh on the street.

A. until　 B. when　 C. with　 D. as

19. They asked me whether I’d like to ____ them in the discussion.

A. attend　　　 B. join　

C. join in　　　 D. take part in

18. Pollution should by any means be stopped ____ the environment.

A. from protecting　 B. protecting　

C. to protect　　　　 D. to protecting

17. They examined again and again _____ any possible error might destroy the whole shuttle.

A. so that　　　 B. in order that　

C. for fear that　 D. so as not to

16. ---Dane hasn’t arrived yet.　　　　　　　　　　　　　

　 ---______? To my knowledge ,　 he is a punctual person.

　 A. How come　　 B. So what　　　

C. How　　　　 D. Why not

15. I have been dreaming of ___ such a good chance for further education abroad, and now my dream has come true.

A. there being　　 B. there to be　

C. there is　　　 D. there will be

14. He wouldn’t accept the job. ____, he didn’t want to work in the charge of his father; _____, he wouldn’t like to work during the night.

A. One thing, besides　　　　

B. On the one hand, on another

C. For one thing, for another　

D. First thing, secondly

13. He left home, ____ never ____ back again.

　 A. determined, to go

B. determining, going

　 C. was determined, to go　

D. be determined, going

12. ---Dad! Tom’s broken a glass!

　 --- ______. Accidents will happen.

　 A. No way　　　　　 B. Doesn’t matter　　

C. No trouble　　　 D. Don’t mention it

11. ___ it or not, his first attempt was a great success.

A. Believe　　　 B. To believe　　

C. Believing　　 D. Believed