Question

--Do you know everybody___came to zhe party?--I don't know the one ___you talked with.

A who;/ B whose;that C that;which D /;whom 选哪个？为什么？

Answer 1

A 问句需要一个定语从句引导词，因为被修饰的是人，所以用 who 回答需要一个定语从句引导词，但因为引导词在定语从句中做宾语，所以被省略。