My mother__(cook) while i __(do)my homework.简洁地说下过去完成时的主要用法、什么时候在一个过去完成时的句子中用过去时或者过去完成时呢?last night 算过去完成时的时间状语么？还有哪些过去完

I __(sweep) the floor yesterday,but my mother__. My mother__(teach)Chinese for more than twenty yearsMy mother__(teach)Chinese for more than twenty years并翻中文 My mother__(cook) while i __(do)my homework.简洁地说下过去完成时的主要用法、什么时候在一个过去完成时的句子中用过去时或者过去完成时呢?last night 算过去完成时的时间状语么？还有哪些过去完 My mother uses___to cook the dishes.(cook) 用现在进行时填空1.——__Bob__(wash)dishes?——No,he isn't.2.——My mother__ __(cook) some nice food now.3.Helen__ __ __(dance)now.She hurt her legyesterday.4.——__are they__(sing)the song at thismoment.——In the empty room.5.It's 填空 My friend__(to have) a toy car.My father and mother__ a car.(have) My father likes summer,but my mother__.A.doesn't B.isn't 我的妈妈喜欢在星期天做家务,My mother__ _____housework on Sundays. 我的妈妈喜欢在星期天做家务：My mother__ _____housework on Sundays My mother__(eat)eggs and fruit for breakfast and ___(have)vegetables for dinncr my father can cook ______food My mather uses____to____the dish.(cook) my father doesn't have long hair but my mother__ a does b doesn't c has d have My mother does lots of housework every day,she is busy.改同义句 My mother__ __housework every day My mother was ill two days ago.(同义句转换）My mother__ __ ill__ two days My sister can________(cook)dinner.She likes_____(cook). my father is a good ___but he doesn't____at home.A：cooker cook B:cook cook Show ______ how to ______ A、me,cook B、I,cook C、my,cook