摘要:---I wonder why Mr Green hasn’t showed up at the meeting yet. ---I’m not sure, but he in a traffic jam driving here. A. could be stuck B. might stuck C. might have been stuck D. must have stuck 选C.表示对过去已经发生事情的推测应该用情态动词的完成时形式.但might的可能性不大,结合上下文的意思可以知道应该用被动形式.

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