______ is known to us all that the old scientist,for ___ life was hard in the past,still works hard in his eighties.A.It,whomB.As,whomC.As,whoseD.What,whom为什么不选C?是不是如果第二空我填whose，就不要for，变成定语从句了？

It is known to us that ______（贡献)to the development of computers in our country 是as is known to...还是as iT known to... it known to all还是it is known to all 13.______ is known to the world,Mark Twain is a great American writer.A.ItB.AsC.WhichD.That newton one of the greatest scientists.is known for is known as is known to is known by ______ that the earth is round.A.as is knownto allB.as you seeC.It is known to allD.as is seen as is known to everyone对不对,众所周知 ______ is known to all ,cancer is among the top killer diseases in our country today.A.It B.As C.That D.What it is known to all that 和as is known to all that 区别 As is known to us.和It is known to us.后面接什么啊?为啥 It Is known to us 和as is known to us 有什么区别 如何区别As is known to all与It is known to all? As is known（在句首时）后面只能跟to As is known to be... ______ the newly elected president of the US take office in Jan 2009 is known to all.为什么这里面填That 呢子? [-A42] _______ is known to us all,______ feed on grass.A.It ; cattle B.This ; cattles C.Which ; cattles D.As ; cattle 翻译并分析 ______ is well known ______ Hong Kong returned to China on July 1st,1997.A．It,that B．As,/ C______ is well known ______ Hong Kong returned to China on July 1st,1997.A．It,that B．As,/ C．As,as D．It,which as is known to all的意思以及as a known to all的意思 That is known to all,Taiwan belongs to China.改错