i was doing my homework while my mother was cooking不是一个句子不能有

i was doing my homework while my mother was cooking不是一个句子不能有 i was doing my homework while my mother (was cooking)为什么不填co My mother was cooking while I__________(do)my homework. I was doing my homework,my mother was cooking in the kitchen while my mother was cooking ,i ___ TV. While my mother was cooking,I was sleeping 这句话中While my moth one saturday ,i was doing my homework while I was doing my homework while my brother was playing piano i I was doing my homework while my father was reading newspape I was doing my homework while my brother was playing games的g I was cooking while my sister was sleeping my brother was singing while my mother was cooking= my broth