—Do you have any idea why Mark is leaving?—No. In fact everyone is about it. A. doubtfulB.

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

(答案→)B. curious

C. enthusiastic

D. annoyed

解析：考察形容词词义辨析。A怀疑的；B好奇的；C热情的；D恼怒的。固定搭配be curious about…对…感到好奇。句意：—你知道为什么Mark要离开吗？—不知道。实际上，每个人对这件事都很好奇。根据句意说明B正确。

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