问题 选择题

The doctors said it would be months _____ Yao Ming was fit enough for regular training.

A.that

B.when

C.since

D.before

答案

答案:D

考查连词.句意:医生说在姚明足够适合参加定期训练之前会有几个月的时间.故选D.在……之前。

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