三

      ( ) 1 The children___ play football on the road.

　　A. can't B. can C. mustn't D. must

　　( ) 2 You ___ be late for school again next time.

　　A. mustn't B. needn't

　　C. don't have to D. don't need to

　　( ) 3 -Must I do my homework at once?

　　-No, you___.

　　A. needn't B. mustn't C. can't D. may not

　　四

      ( ) 1 His arm is all right. He___ go and see the doctor.

　　A. has not to B. don't have to

　　C. haven't to D. doesn't have to

　　( ) 2 He had to give up the plan, ___ he?

　　A. did B. didn't C. does D. doesn't

　　( ) 3 They had to walk here, ___ they?

　　A. mustn't B. did C. didn't D. hadn't

　　五

      ( ) 1 He had better stay here, ___ he?

　　A. didn't B. don't C. hadn't D. isn't

　　( ) 2 You'd better___late next time.

　　A. not to be B. not be C. won't be D. don't be

　　( ) 3 You'd better ___ your hair ___ once a month.

　　A. had; cut B. had; cutted

　　C. have; cut D. have; cutted

　　( ) 4 You___ ask that man over there. Maybe he knows the way.

　　A. had better not to B. had not better C. had better D. had better not