The London fire in 1644 lasted three months ( ) it died out.
4个回答

answer B

until和before的区别：

until/not until是指：直到什么时候为止...其中非延续性动词用后者,延续性动词用前者.

例句：Not until my father came back did I fell asleep.

I was awake until my father came back.

注意：倒装时倒装主句,从句语序不变.改为强调句时基本语序不变.

before在...之前,常用在时间状语从句中.

常用句型：It is +( )+before...

注意：前后时态要一致,遵从主将从现原则.

翻译：1...就...It was not long before he turned against his country.不久他就背叛了他的祖国.

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