who could have predicted that within ten years he would be in charge of the这是什么句型?特殊疑问句?不像.跟陈述句似的,但又有WHO

The money has disappeared.Who could have taken And the boy,who could not have been more than seven or eight years old,replied Peter's textbook is gone.Who _ have taken it?A.mustB.wouldC.shouldD.could Who else could have done it but your naughty son这里 could have done 是作为词组还是分开来的 could have 是什么句子?Who could have predicted that within ten years he'd be in charge of the whole company?请问could have 是什么句型?整个句子是什么句型? could have been done ,could have Could have been who helped Suny get her work done?Could have been who helped Suny get her work done?A they...it B they...them C it...them D it...they选什么？为什么？ 英译汉!急需Sometimes I truly connet with someone who I could never have met otherwise-as I did witSometimes I truly connet with someone who I could never have met otherwise-as I did with Nellie. I have no idea who stole his wallet.It _______ anyone.A should have been B could have been C must i have no idear who stole his wallet.it ______anyone.A.could have been B.should have been C.must h who else's book could it have been?中的else‘s如何发音?最好写音标.谢谢! You are the only person ----l have ever met ---could do it为什么met后加who而不是whom? We'd like to think that they'd be affordable so that everyone who wanted one could have onePlease translate. Could you remember who I was?Can you heal my pain?I have got nothing to remember,nothing to forget who could have predicted that within ten years he would be in charge of the这是什么句型?特殊疑问句?不像.跟陈述句似的,但又有WHO could have been could never have done could have been