I know the girl for ____(who) you are waiting
10个回答

1.whom 定语从句.

可变为:I know the girl who/whom you are waiting for.

因为引导词在从句中作宾语,所以who/whom都可.

但在你的这道题中,把for调到前面了,介词后面必须跟宾格,所以用whom.

2.sleeping.

pretend是一个很重要的词.

pretend to do sth.假装去做某事

pretend doing sth.假装正在做某事

pretend have done sth.假装做过了某事

具体用哪一个根据句意而定.