题目内容
【题目】__________ the train arrived, some people were waiting inside the station __________ others were heading for the platform.
A. While ; while
B. While ; when
C. When ; when
D. When ; while
【答案】D
【解析】句意:当火车来的时候,有些人在站内等待而有些人直奔站台。when当……的时候,可以和瞬间动词arrive连用,后者while表示对比。
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