The two pupils （ ） you taught three years ago have become drivers.
（A）when
（B）whom
（C）where
（D）whose
Students should involve themselves in community activities （ ） they can gain experience for growth.
（A）who
（B）when
（C）which
（D）where
The size of the audience, （ ） we had expected, was well over one thousand. 选项：
（A）whom
（B）who
（C）as
（D）that
