He was told that it would be at least three months ___ he could recover and retu
题型：不详难度：来源：
He was told that it would be at least three months ___ he could recover and return to work. | A．when | B．before | C．since | D．that |
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答案
| B |
解析
| before引导时间状语从句，意为“在……之前”，表示他康复重返工作还至少三个月时间。when引导时间状语从句，意为“当……的时候”。since引导时间状语从句，意为“自从”，表示从某个时候一直延续到现在，常与现在完成时连用。that用于名词性从句或定语从句。 |
举一反三
| I’d like to study law at university __________ my cousin prefers geography. |
Many of them turn a deaf ear to his advice, _____ they knew it to be valuable. | A．as if | B．now that | C．even though | D．so that |
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The open-air celebration has been put off _______ the bad weather. | A．in case of | B．in spite of | C．instead of | D．because of |
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| ____ you may be right , I can’t agree completely. |
| The queen will visit the town in May, _____she will open the new hospital. |
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