“I’d like to buy an expensive camera.” “Well, we have several models ______.”

Plastic and rubber won’t _________ electricity,but copper will.

The boy’s father insisted that the boy ______ badly and that he ______ to the nearest hospital at once.

 We may have dreams because we have needs that are  _____  in our daily lives.

Grades would______from one or two，for outstanding or excellent，to six or seven，for poor or very poor.