单项选择题

His parents asked him to buy books（）he found useful and necessary for his study.

A．whichever
B．whatever
C．whenever
D．however

<上一题目录下一题>

热门试题

单项选择题

There is no point（）about the poor working condition here.

A．in complaining
B．to complain
C．of complaining
D．complain

单项选择题

23 It（）have mined last night, for the ground is wet.

A．will
B．can
C．should
D．must

相关试题