62..---I wonder why Mr Green looks worried today. --- I’m not sure, but he a small accident driving here. A. must have had B. might have had C. might have D. could have 查看更多

 

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I wonder why Mr Green looks worried today.

I'm not sure, but he ________ a small accident driving here.

[  ]

A.must have had
B.might have had
C.might have
D.could have

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