20. Stories spread quickly among his friends_______ Tom had lived on a desert　

Island for over five months after the ship sank.

A. if　 B. what　 C. that　 D. as

19. You should make it a rule to leave things ____ you can find them again.

　 A. when　 B. where　 C. then　 D. there

18. He 　　　comb his hair at the table, even though he knows I don’t like it.

A. can　 B. must　 C. shall　 D. will

17. I’d appreciate 　　　if you would make room for my desk.

　 A. that　 B. it　 C. this　 D. you　

16. Look at the terrible situation I am in! If only I 　　　your advice.

A. follow　 B. would follow　 C. had followed　 D. have followed

15. The villagers, 　　　had been damaged by the flood, were given help by the International Red Cross.

A. a11 of their houses　 B. all their houses　 C. whose all houses　 D. a11 of whose houses