6. He ____ to go there when he was young. A. usedn’t　 B. didn’t use C. is used D. both A and B

5. You ____worry about that.　　　 A. don’t have to B. haven’t to C. needn’t D. all the three answers

4. “Must I wait here till he comes?” “____.”

　　　 A. No, you needn’t B. You haven’t to C. No, you don’t have D. No, you mustn’t

3. There is much gas here, you __ smoke here. A. had better not B. may not C. needn’t D. mustn’t

2. ___ you tell me what it means? A. Can　　 B. Could　　　 C. Must D. both A and B

1. “May I go there before lunch?” “No,____ .”

　　　 A. You mustn’t 　　 B. You may not　　　 C. you’d better not D. all the three answers

43.　 That is just ____ they are mistaken. A. what　 B. then　 C. that　 D. where

VIII．情态动词

42.　 Go to see the doctor at once, __ your cold may get worse.　 A. and B. but C. or D. unless

41.　 I don’t care ____ it doesn’t rain. A. whether　　　　 B. that　　 C. if　　　　 D. how

40.　 I don’t doubt ____ he will succeed A. whether　　 B. that　　　　　　 C. if 　　　 D. when