Question

单项选择I 've became good friends with severl of the student in my school ____I met in the

English speech contest last year
A who
B where
C when
D which

Answer 1

这是高考原题，不过你打得出了两处错误，先纠正再回答：
I 've 【became——become】 good friends with severl of the 【student——students】 in my school ____I met in the English speech contest last year
A who B where C when D which
答案比较明朗，选A。
但要解释清，还挺费事：
①句意：我已经与去年英语演讲赛中遇到的我们学校的几名学生成为了好朋友。主干：与...成为好友。
②句式特点分析：准确来讲，这是一个【分隔式/隔离式定语从句】：
【I主句主语】【 have become good friends with谓语】【 severl of the students 宾语，后面定语从句的先行词，表示人】【 in my school 介词短语，定语，将先行词与后面的定语从句分隔开来】【who I met in the English speech contest last year 】
例如：
I was 【the only person先行词】【 in my office 多看做定语（或状语），分隔成分 】【who was invited.定语从句】

祝你开心如意！O(∩_∩)O~~

Answer 2

A

祝你学习进步，更上一层楼，快乐每一天！

Answer 3

选择A吧
把in my school 看成是插入语 真正的先行词是student所以用who ，希望可以帮到你。