John Wood, who traveled to Nepal to help poor school children, used to work______.

A．He sent the ear to the garage.
B．He did nothing about his car.
C．He repaired the car himself.
D．He sold his car to somebody else.

A．It learns to say by imitating what people say.
B．It learns to say by imitating what people hear.
C．It learns to say by thinking.
D．It learns to say by seeing.