— Must I finish the exercise at school? — No you don’t have to. You do it at home.A. must

问题补充：

— Must I finish the exercise at school?

— No, you don’t have to. You do it at home.

A. must

B. need

C. will

D. can

答案：

A. must

B. need

C. will

(答案→)D. can

解析：根据句子的意思可知答案为D。