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Tom have kept his word. I wonder why he changed his mind. A. must B. should C. n

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Tom have kept his word. I wonder why he changed his mind. A. must B. should C. n

 Tom ____ have kept his word. I wonder why hechanged his mind.

A. must                        B.should              C. need                          Dwould

 

试题答案

【答案】

B

【解析】

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