---How far is it from your school to Lake Taihu?---It’s about ________ drive.
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.
Lily will give a talk tomorrow. She is thinking about ________ to make everyone happy with her speech.