I'd appreciate ____ very much if you could shut the door behind you.A./ B.it C.you D.that为什么选B?

I'd appreciate ____ very much if you could shut the door behind you.A./ B.it C.you D.that为什么选B?
I'd appreciate ____ very much if you could shut the door behind you.
A./ B.it C.you D.that
为什么选B?

I'd appreciate ____ very much if you could shut the door behind you.A./ B.it C.you D.that为什么选B?
I would appreciate it if...如果...我会感激的,固定搭配

固定用法I'd appreciate it。
你能关上后面的门吗，谢谢了.

记住就行了，常见的固定搭配
有时候学语言不需要太追究，对一些语言现象就是一些老外有时候都说不清楚。