The manager of the company insisted that all the staff members（）the new safety rules.

单项选择题If you can' t put your PC（）good use, sell it to those who really need it.

A．into
B．of
C．to
D．with

单项选择题Evidence came up（）specific sounds are recognized by babies as young as 6 months old.

A．what
B．which
C．that
D．whose