题目内容

【题目】We the difficulty together, but why didn't you tell me?

A. could face

B. might face

C. could have faced

D. must have faced

【答案】C

【解析】could have done的格式是表示对过去的推测 从 why didn't you tell me看出,这正是对过去的推测 而might还是对现在的推测,虽然用过去式的样子,但是不是过去式,只是语气的委婉.

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