The roof fell ______ the PLA men had time to rescue the child trapped in the hou - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

The roof fell ______ the PLA men had time to rescue the child trapped in the house.

A．until

B．unless

C．before

D．because

答案

解析

fall 是短暂性动词，所以不能用until，此句意思应该是“解放军还没有救出被困在房子里的小孩，房顶就掉下来了。”所以答案C。

核心考点

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