几个英语单选中的语法问题(英语高手进)RT.下面几个单选答案己有,想知道为什么选这个..1.ShethoughtIwastalkingaboutherdaughter,()infact,Iwastalkingaboutmydaughter.A.whomB.whereC.whichD.while答案是D2

Question

几个英语单选中的语法问题(英语高手进)
RT.下面几个单选答案己有,想知道为什么选这个..
1.She thought I was talking about her daughter ,( )in fact,Iwas talking about my daughter .
A.whom B.where C.which D.while
答案是D
2.The problem needs( )
A.to discuss B.a discuss C.discussing D.being discussing
答案是C
3.What about the two of us ( )a walk down the garden .
A.to take B.take C.taking D.to be taking
答案是C
4.Mother asked the young kid( )with his toy car.
A.what the matter was
B.what was the matter
C.what the matter is
D.what is the matter
答案是B
以上,请英语高手为我解释一下为什么,thank you ~

Answer 1

1.根据语义,她以为我说的是关于她女儿的,（ ）实际上,我说的是我女儿.
这里是表示了转折,while在这里表示了转折,如果有类似but,however也可以选.但AB两项引导的是定语从句,这里（）后面的句子成分完整.Cwhere引导状语或同位语从句,这里显然可以排除.
2.固定用法 need doing=need to be done.问题是要被讨论的,要体现被动.所以句子也可以用被动的to be done形式.The problem needs to be discussed.
3.通常的语法根据句子成分来判断,好像A也可以,但这里前面用的是What about后面只能接doing
4.what引导的从句,这里what既做ask的宾语,又做后面从句的主语.例如 That's what is wrong with him.在举who 为例 I like Mike who is my best bro.