--Could I go skating with you dad?-- . You have to practice piano at home.A. I am afraid

问题补充：

--Could I go skating with you, dad?

-- . You have to practice piano at home.

A. I am afraid not

B. Have a good time

C. Of course

D. You should do that

答案：

(答案→)A. I am afraid not

B. Have a good time

C. Of course

D. You should do that

解析：I am afraid not恐怕不；Have a good time祝你玩得愉快；Of course 当然了；You should do that你应该这么做。句意：爸爸，我能和你一起去滑冰吗？联系下文，你必须在家练钢琴。可知前文为否定回答，故选A。