Question

The pen ________ he is writing is mine.

A．with which B．in which

C．on which D．by which

 

Answer 1

【解析】with which是“介词＋关系代词”结构，常用来引导定语从句。with有“用”的意思，介词之后只能用which，不能用that，with which在定语从句中作状语，即he is writing with a pen。