问题

The importance of saving gas_______be stressed too much. Automobiles use up some 70 billion gallons of gas a year.

A:can’t
B:mustn’t
C:shouldn’t
D:may not

正确答案是：

同类题型

下列各句中加点的熟语使用不当的一项是（）

ets done _______ when people do ittogether,and the rewards are higher too.

Could you tell me ____________—Sure. Walk straight along this street and you’ll find it.

Mrs. Smith lives next to us. She is really a good ______ because she is always ready to help people around her.

In the garden there are a lot of flowers ______ I don’t know the names.