30．Old people must ________.

　A. be spoken to politely　　　B. speak to polite

　C. be spoken politely　　　　D. speak polite

29．The number of ________ in our class ________ fifty.

　A. student, is　　　　　 B. the students, are

　C. the students, is　　　　 D. students, are

28．-Do you mind my taking this place?

　- ________ . It’s for Mr Smith.

　A. Not at all　　　　　　B. Yes, please

　C. Yes, of course not　　　　 D. Better not

27．Stop ________ so much noise! My father is sleeping.

　A. to make　　 B. making　　C. to hear　　D. hearing

26．We’ll go for a picnic if it ________ this Sunday.

　A. won’t rain　 B. isn’t raining　C. doesn’t rain　D. don’t rain

25．My watch doesn’t work. I must have it ________.

　A. repaired　　 B. repairs　　C. repair　　 D. repairing

24．-I’m sorry to keep you waiting for me so long.

　- ________.

　A. I don’t think so　　　　 B. Don’t say so

　C. It doesn’t matter　　　　D. I’d love to

23．The ticket is on the floor, please ________.

　A. pick up it　　B. look for　　 C. pick it up　　D. look it up

22. The little girl was too frightened ________ a word.

　A. not to tell　　B. not to say　 C. to tell　　　D. to say

21．-Must I get up early tomorrow?

　-No, ________.

　A. you mustn’t　　　　　B. I don’t think you have to

　C. you can’t　　　　　　D. you need