问题
选择题
I’ve become good friends with several of the students in my school __________ I met in the English speech contest last year.
A．who
B．where
C．when
D．which
答案
答案：A
who 表明先行词是人（一般在从句中充当主语）
which 表明先行词是物（也指事）在限定性定语从句中=that,在非限定性定语从句中只能which
where表明先行词是地点,when引导时间状语从句.句子中先行词the students是人,所以选A.