The two pupils （ ） you taught three years ago have become drivers.
（A）when
（B）whom
（C）where
（D）whose
It was raining, （ ） was a pity. 选项：
（A）what
（B）which
（C）that
（D）it
The size of the audience, （ ） we had expected, was well over one thousand. 选项：
（A）whom
（B）who
（C）as
（D）that
