Question

6.—Mr Zhang,must I come again on Saturday morning to clean the windows?

—No,you. I have asked others to do it.

   A. don't have to   B. mustn’t

    C. can’t   D. shouldn’t 

Answer 1

6.A

6.A    对以must开头的一般疑问句作否定回答时，用“No，... needn’t,” 或 “No,...don't/doesn’t have to.”。