The government has taken some measures to solve the shortage of electricity , bu
题型：不详难度：来源：
The government has taken some measures to solve the shortage of electricity , but it may be some time _________the situation improves.| A．since | B．when | C．before | D．unless |
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答案
| C |
解析
| 考查固定句型。It be 一段时间before 从句，表示一段时间以后某事才发生。Before时间状语从句里用一般现在时表示将来时，主句里可以使用将来时或者情态动词。句意：也许一段时间以后情况才会改善。 |
举一反三
The new hospital will be located in _________ used to be a wasteland and a huge shopping mall will also be constructed ________ there used to be a school many years ago.| A．where, where | B．what , in which | | C．what , where | D．which, where |
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Nobody can achieve anything of real significance _____ he works very hard.| A．if | B．unless | C．meanwhile | D．as |
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The terrible earthquake took place early this month ______ three southern countries meet.| A．where | B．when | C．that | D．which |
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You will succeed in the end __________ you give up halfway.| A．even if | B．as though | C．as long as | D．unless |
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| The last time we had great fun was __________ we were visiting the Water Park. |
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