This is the umbrella ()last mouth.

题目

This is the umbrella ()last mouth.
A.which I bought it
B.which I bought
C.that I bought it
D.who I bought

答案

B
句子的意思：这就是我上个月买的那把伞
the umbrella 做了定语从句的宾语,所以从句中不能有宾语,其他三项都有it做宾语,所以排除选B