题目

题型：不详难度：来源：

It was announced that only when the fire was under control_______to return to their homes.

A．the residents would be permitted	B．had the residents been permitted
C．would the residents be permitted	D．the residents had been permitted

答案

C

解析

试题分析：句意:这里公告只有火势被控制住了居民才可以重返家园。这里it是形式主语，that引导的是主语从句，在这个主语从句中，把only放在句首，后面的主句用部分倒装，故排除AD，根据句意居民将要返回家园，所以应该用过去将来时，故选C。
点评：本题难度适中。倒装及动词的时态是高中阶段的重要的两项语法项目，它们的各种情况比较多，需要考生牢记它们的用法，但是把两者结合一起来考查更增加了试题的难度。
即学即练:According to the law, it is ______get your license.
A. not until you’re eighteen can you
B. until you’re eighteen that you can’t
C. not until youre eighteen that you can
D. until you’re eighteen when you can’t
解析：C。含有not ...until的句子的强调句用It is/was+not until ...+that ...句型。