Someone called me up in the middle of the night, but they hung up ________I coul
题型：不详难度：来源：
Someone called me up in the middle of the night, but they hung up ________I could answer the phone.| A．since | B．until | C．before | D．as |
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答案
| C |
解析
试题分析：句意：有人在深夜给我打电话，但是我还没接听电话，他们就挂了。考查时间状语从句，since自从,until直到,before在……之前,as当……时候，由题意很容易选C。
考点: 考查状语从句的用法。 |
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