—?Kate,you look pale.—Oh,thank you,it doesn’t matter.A. What’s onB. What’s up　C. Are you

— ?Kate,you look pale.
—Oh,thank you,it doesn’t matter.
A. What’s on
B. What’s up　
C. Are you ill
D. Do you feel terrible

A. What’s on(答案→)B. What’s up　C. Are you illD. Do you feel terrible解析：What’s up？等于What’s wrong with you?C、D两项均为汉语习惯。

就是这个解释