this is the pen which was given by friend与this the pen which

this is the pen which was given by friend与this the pen which 1.This is the pen with which i 英语 This is the pen used by David.This pen was used by David. This is the pen with which I write.其中with+which能不能改成关系副词. This is the ___wallet which was found by the police. This is the same pen that/which the one I lost,but mine is a 单句改错求讲解1This is the most expensive pen which I have bought.2 this is the her pen the cake was made by me和 this is a cake which was made by me this the the pen,the pen is nice . This gift was the Amber Room,which was given this name becau This is pen.how much is the pen