The boy was so tired that he fell asleep ________ his mother could take off his clothes.[ ]A. before

题目简介

The boy was so tired that he fell asleep ________ his mother could take off his clothes.[ ]A. before

题目详情

The boy was so tired that he fell asleep ________ his mother could take off his clothes.
[     ]
A. before  
B. after
C. while  
D. when
题型:单选题难度:中档来源:同步题

答案

A

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