As she was reading the newspaper,granny__asleep A)falling B)fell C)had fallen D)falls

题目

As she was reading the newspaper,granny__asleep A)falling B)fell C)had fallen D)falls

答案

B 当她看报时,奶奶睡着了.
两个动作在过去同时发生,持续时间短的,用过去时,持续长的用过去进行时.