The boy was so tired that he fell asleep _______ his mother could take off his c
题型：不详难度：来源：
The boy was so tired that he fell asleep _______ his mother could take off his clothes. | A．before | B．after | C．while | D．when |
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答案
| A |
解析
试题分析：句意：这个男孩太累了，以至于在他的妈妈给他脱衣服之前，他就睡着了。Before在……之前 after在 …… 之后 while然而 when当…… 时候，选A。 |
举一反三
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