While watching tv,_____A.we heard the doorbell ringing B.we heard the doorbell rang我选的是A,是错误的.为什么错?答案B为什么是对的?

They watching TV __ that moment. While she ---- newspapers,her mother was watching TV While I was watching TV,the phone______(ring) 填什么 When/While it began to rain ,I was watching TV He was watching TV while his wife was washing dishes. 我妹妹喜欢躺在床上看电视.My sister likes __ __ __ __and watching tv while he came into the room,i was watching TV.改错 A.CAME INTO B.WATCHING TV 关于while的用法 Toby was watching TV while Tim____(do)his homework at 7 PM The telephone rang.We were watching TV.合并为一句We were watching TV ___ the telephone __. I FELL ASLEEP while watching tv.这句是不是完整的应该是：I FELL ASLEEP while I WAS watching tv.后面是过去进行时吧?I FELL ASLEEP while watching tv.为什么可以这么省略的写? Now Helen's family __(be) at home and __(watch) TV.为什么用watching? He be watching tv now.yes he be watch tv nowA:__ he be watching tv now B:yes,he __ be watching tv now.A.must can b.can must c.can can d.may must 同义句转换：My sister fell asleep while she was watching TV last night.My sister fell asleep while she was watching TV last night.My sister fell asleep ( ) ( )was watching TV last night. while my mother was cooking ,i ___ TV.A.was watching B.am watching C.watch D.watched the tv program is showing while the event ishappening.同义句the event__ __ __on tv Mr Zhou （）（fall）asleep while he was watching TV 动词填空... 整理下列句子 me/I/to/see/last night/came/watching/someone/while/was/TV We were watching TV ___ suddenly the light went out.填when还是 while?为什么?