主从复合句：【4】道题,跪求解答!在线等!
1.Air is to us ______ water is to fish. 我选D,答案A为什么?
A.whatB.thatC.whichD.is that
2.I don´t know ______ is ______ I was born. 我选D,答案C,为什么?
A.that;whenB.that;whatC.that;whereD.what;where
3.As many nembers ______ were present agreed to the plan.
A.whoB.thatC.whichD.as 我选A,答案D为什么?
4.______ can be seen from his face,he is quite satisfied.
A.ThatB.ItC.WhichD.As我选A,答案D为什么?