_Could I go to the movie this Sunday, Dad?Yes, you. But you come back before nine.A. shou

_Could I go to the movie this Sunday, Dad?
Yes, you . But you come back before nine.
A. should, can
B. must ,have to
C. can , have to
D. need, must

A. should, canB. must ,have to(答案→)C. can , have toD. need, must解析：should,应该;need，需要，否定式是needn’t；can是能，能够，否定式是can’t。must的含义是必须一定，其否定形式mustn’t表示禁止的含义。故must的否定回答一般借助于needn’和don’t have to来构成，句意:爸爸,这个周日我能去看电影吗?——是的，你能。但是你必须在九点之前回来。结合语境可知选C。

你的回答很对