He was told that it would be at least three more months______he could recover an
题型：不详难度：来源：
He was told that it would be at least three more 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. |
A small car is big enough for a family of three ____ you need more space for baggage.| A．once | B．because | C．if | D．unless |
|
| Stand over there ___ you’ll be able to see the oil painting better. |
_____ we choose healthy food for our main meals, we probably still need to exercise now and then.| A．Unless | B．As though | C．Until | D．Even if |
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| The weather was ______ cold that I didn’t like to leave my room. |
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