单项选择 适中0.65 引用17 组卷834
We need to get to the root of the problem ________ we can solve it.
A.while | B.after |
C.before | D.as |
2016·全国·一模
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--Everyone can make a mistake.
--Yes, but we should correct it it gets worse.
--Yes, but we should correct it it gets worse.
A.when | B.while | C.after | D.before |
Mary has to learn French ______ she will be sent to work in Paris for a year.
A.while | B.although | C.because | D.unless |
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