Lucy hasn't come yet.I don't know what______(happen) to her.答案是has happened ,为什么呢?

he hasn't come yet是什么时态? Lucy hasn't come yet.I don't know what______(happen) to her.答案是has happened ,为什么呢? why hasnt she come yet?Nobody knows.Nobody knows _____ _____ ______come yet Why hasn't she come yet?Nobody knows.(改为宾语从句）Nobody knows _ _ _ come yet. The patient hasn't yet ___after the operation.A come out B come round C come off D come on 连词成句:seems,he,it,come,back,hasn't,yet.顺便翻译一下中文。 She promised to come,yet hasn't turned up until now, His new novel hasn‘t come out yet.的同义句换为为His new novel hasn't _____ _____ yet. i don't know why he hasn't come yet.这句话里为什么要用hasn't?可以用is't吗? _____everyone arrived yet?no,mike___come yet.he ___in a minute1.have,doesn`t,comes 2.has,doesn`t,is coming 3.have,hasn`t,will come 4.has,hasn`t,will come he hasn't had breakfast yet. he hasn't decided it yet.请译出 Hasn't anyone aired this room yet? Mother hasn't come back yet- Mother hasn,t come back yet.-- Well,she ought ____.A.to B.to be C.to do D.to have 为何为D. my mother went to beijing last week,and she hasn't come back yet（改为同义句 Me.Wang was not___home,he hasn't come back yet.A.in.B.to.C.at.D.go选哪个 He hasn't come yet.what do you consider ---to him?为什么选has happened而不是happening 不是consider doing Mr Huang____to Kunming.He hasn't come back yet.A.goes B.went C.has gone D.go