The roof fell ______ he had time to dash into the room to save his baby.

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问题 The roof fell ______ he had time to dash into the room to save his baby.

选项 A、since
B、as
C、before
D、until

答案C

解析空格前后两个分句在时间上存在先后关系，因此选before。

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英语

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