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-Why does Mary look so worried today? -I’m not sure, but she a small accident dr

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-Why does Mary look so worried today? -I’m not sure, but she a small accident dr

—Why does Mary look so worried today?

—I’m not sure, but she _____ a small accident drivinghere.

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

 

试题答案

【答案】

D

【解析】

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