My mom was cooking____my father was working in the garden A while B which C since D whom
问题描述：
My mom was cooking____my father was working in the garden A while B which C since D whom
答
【答案】A
【句意】我的妈妈正在做饭,而我的爸爸正在花园里工作.
A while 而
B which 哪一个
C since 自从；因为
D whom 谁
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