They are going to see the movie Avatar(阿凡达). Why not ________ them?A. to join B. join C. joining
I don't know the way, she doesn't know,
The box is __________heavy for me _________carry.
He often saw his mother __________ clothes .
The boy is ________ see the teacher because he ________ a mistake.
Beijing is one of the ______ in the world today.