题目内容
The bus hit the huge stone by the road heavily _________ he could stop it.
A. after B. before C since D. until
A. after B. before C since D. until
B
这题考查连词的用法:before表示“还没来得及”,句意是:他还没来得及,公共汽车就撞上路边的大石头。选B。
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