I was preparing______the coming contest while my mother was

I was preparing______the coming contest while my mother was While my mother was cooking,I was sleeping 这句话中While my moth while my mother was cooking ,i ___ TV. 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 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 My mother was cooking while I__________(do)my homework. I washed my hands and ______ supper while Mother was ______ I was cooking while my sister was sleeping my brother was singing while my mother was cooking= my broth 1.The baby ____ _____ (睡着了)while the mother was coming