Question

Everyone knows, perhaps except you, _______ your girl-friend is a cheat.

A．who	B．which
C．that	D．what

Answer 1

C

考查宾语从句连接词。Know后是一个宾语从句，, perhaps except you, 是插入语，肯定句用that引导宾语从句，从句不缺少成分，that引导宾语从句无意义。故选C。