The boy _ down by a truck when he was ru...[九年级][英语]
收录时间：2021-12-21 答题：初三英语（江老师）
【题目】The boy ______ down by a truck when he was running across the road.
A. is knocked B. was knocked C. will be knocked D. has been knocked
【答案】B
【解析】句意：那个男孩在过马路的时候，他被一辆大卡车撞了。根据when后用的时态是过去时范围之内的，所以主句也应该用过去时，故排除ACD，选项AD属于现在时，选项C属于将来时， boy与knock down之间是被动关系，故选B。
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