I'm looking at the photograph _____ you sent me with your letter.

题目

I'm looking at the photograph _____ you sent me with your letter.
A.who B.whom C.which D.it

答案

C.这里考得是定语从句的用法.由于修饰的是物photograph,所以应该用which或that连接.
who 用以修饰人,whom 用以修饰人（宾格）,it 不能作定语从句的关系词.