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while my mother was cooking ,i ___ TV.

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while my mother was cooking ,i ___ TV.
A.was watching B.am watching C.watch D.watched
While my mother was cooking ,I (A、was watching) TV.
当我妈妈在煮饭时,我在看电视.
while引导的时间状语从句,意为“当A某在做某事时,B某在做某事”.从句和主句都是延续性、或正在发生的状态,不能选择C和D两项.从句的was说明时态为过去进行时,所以主句也是过去（而不是B）进行时.
while my mother was cooking ,i ___ TV. While my mother was cooking,I was sleeping 这句话中While my moth i was doing my homework while my mother (was cooking)为什么不填co i was doing my homework while my mother was cooking不是一个句子不能有 My mother was cooking while I__________(do)my homework. I was watching TV while my mother ____the beds.A took B was While I （was watching） TV,my mother （was reading） books 这句话对 英语----连词成句 while,Jim,his mother,was,watching Tv,cooking,was I was cooking while my sister was sleeping my brother was singing while my mother was cooking= my broth My mother was cooking when my father came back 用While改写 While john was watching TV ,his wife was cooking .