--Do you have any idea why Mark is leaving?-No. In fact everyone is about itA. do

问题补充：

----Do you have any idea why Mark is leaving?

---- No. In fact, everyone is about it．

A. doubtful

B. curious

C. enthusiastic

D. annoyed

答案：

A. doubtful

B. curious

C. enthusiastic

D. annoyed

解析：考查形容词：A. doubtful怀疑的B. curious好奇的C. enthusiastic热情的D. annoyed生气的，句意：你知道马克为什么离开吗？--不知道，实际上，大家都很好奇。选B。