Question

-Mum, must I do my homework now?

-No, you ________．You can do it after supper．

1. A.
   mustn't
2. B.
   can't
3. C.
   shouldn't
4. D.
   needn't

Answer 1

D
對must問句的否定回答，一般用needn't，“沒有必要”。mustn't的語氣較重“一定不要”。