Nearly two weeks passed_____the old man was able to explain what had happened to him.

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问题 Nearly two weeks passed_____the old man was able to explain what had happened to him.

选项 A、when
B、till
C、before
D、while

答案C

解析 before在这里的意思是汉语的“……才……”,也就是说,在老人能够解释发生了什么情况之前,已经过去差不多两个星期了。考生应该根据句子的意思选择合适的时间连词。
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