题目内容
The doctors said it would be months _____ Yao Ming was fit enough for regular training.
| A.that | B.when | C.since | D.before |
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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| A.that | B.when | C.since | D.before |