If it had been known that,why the need for and at the beginning .If it had been known that,why the need for and at the beginning .

If it had been known that,why the need for and at the beginning .If it had been known that,why the need for and at the beginning . Stave said that if he had known how it worked,he would have been told Jane appears as if she === the secret为什么用knew 而不是 had known ,konw,has been known、 Thank you very much indeed.If it had not been for your advice I really what I should have done.A.don’t know B.didn’t know C.hadn’t known D.wouldn’t have known especially if it had never been attained before.什么结构 If ihad had atry,it would have been different. 英语翻译If my father had known of it he would have died a second time. If it had not been for与If it were not for有什么区别? If it had not been for literature,the well-known writer Rowling the world wide attention.A.could not attract B．must not attract C．would not have attracted D．should not have attracted 英语：1.I would have phoned you ,if I ___ time.( )A.had had B.have had C.had2.If I __ her tomorrow,I would pass your note to her.( )A.see B.shall see C.saw3.__,I'd have told you.( )A.If I would have known it B.If I had known it C.Had I known it4.T You couldn't have had all your work done ______ .A.if it was not for me B.if had it been for us C.it had not been for me D.had it not been for me it has long been known that Goods must be fit for any particular purpose _____________ to the seller.If the shop says a glue can mend china then it should.a.known b.to be known c.being known d.having been known If it had ------------for the heavy rain.i should have been here earlier A if it were not B were it notC had it not been D if it wasn't __for the rain ,the construction work would have been faster A If it were not B Were it notC Had it not been D If it hasnt Were it not for the adoption of the open policy,things ______ they are today.A would never be B would never have been 为什么不能选A,有today难道不是错综时间虚拟条件句吗?还有一题,也类似：35.If we had known that she had plan ____for your help,we wouldn't have succeeded.A,Hadn't it been B,Had it not been C,If it had been D,If it were但是A和B的区别在哪儿?