—Mike invited us to take part in the party this Sunday.
— Is tomorrow his birthday?
A. Why not?
B. That’s all right.
C. What for?
D. What a good idea!
网友回答
A. Why not?
B. That’s all right.
(答案→)C. What for?
D. What a good idea!
解析：根据Is tomorrow his birthday?可知，对方应该是很惊讶，不知为什么会邀请我们去参加晚会，故应该用what for。所以本题选C。