Every means ___ the river from being polluted.A．are used to preventB．are used t

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Every means ___ the river from being polluted.

A．are used to prevent

B．are used to preventing

C．is used to prevent

D．is used to preventing

答案

解析

略

举一反三

What they need ______ enough money, while what we need ______ enough workers.

A．is; is

B．are; are

C．is; are

D．are; is

题型：不详难度：| 查看答案

The e-mail, as well as the telephone, ______ an important part in daily communication.

A．is playing

B．have played

C．are playing

D．play

题型：不详难度：| 查看答案

. Both bread and butter ______ on sale in this shop.

A．is

B．are

C．have

D．has

题型：不详难度：| 查看答案

. He is one of those who ______ very hard.

A．works

B．work

C．is

D．are

题型：不详难度：| 查看答案

Books of this kind ______ popular with the pre-school children.

A．is

B．are

C．has

D．have

题型：不详难度：| 查看答案