—Do you know the man _______ is talking with our English teacher?—Oh, he must be Lin Tao's father. He was looking for Lin Tao just now.
This kind of computer ________ too much. I can’t afford one.
Luckily, all the students got out of the teaching building _ it fell down.
—How are you going to the train station to meet your aunt? —I'm going there ______ my car.
By _______ way, is _______ man in _______ red your brother?
I don't know when ______.