问题
选择题
While my mother________ some washing, I was making a kite for Mary.
A．did
B．was doing
C．is doing
D．does
答案
答案：B
while引导的时间状语从句常用进行时态。表示两个动作同时进行。妈妈做饭时，我正在给玛丽做风筝。
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While my mother________ some washing, I was making a kite for Mary.
A．did
B．was doing
C．is doing
D．does
答案：B
while引导的时间状语从句常用进行时态。表示两个动作同时进行。妈妈做饭时，我正在给玛丽做风筝。