Food safety is important. Rules ______ to stop people from food pollution.A．must

题型：不详难度：来源：

Food safety is important. Rules ______ to stop people from food pollution.

A．must make

B．must be made

C．can’t make

D．can’t be made

答案

解析

被动语态的用法。本句句意：食品安全很重要，必须制定制度来阻止人们遭受食品污染；根据句意应该含情态动词must的被动语态，即must be done。

举一反三

These days students in some schools ______ not to use mobile phones.

A．ask

B．asked

C．are asked

D．were asked

题型：不详难度：| 查看答案

The Taiwan spotted deer, Fan Xing and Dian Dian, __________ to the Chinese mainland on April 16, 2011.

A．have sent	B．were sending
C．were sent	D．had sent

题型：不详难度：| 查看答案

--Do you know Mr Black _ _ by the police?
--Yes. He’s believed to have killed a woman~

A．wants

B．is wanted

C．is wanting

D．has wanted

题型：不详难度：| 查看答案

－Can you go to school in other clothes?
－No. We _______ to go into the school unless we are in school uniforms.

A．allow

B．are allowed

C．are not allowed

D．allowed

题型：不详难度：| 查看答案

Here are the photos of my favourite football players in Beijing.

A．who were taken	B．that took
C．which I was taken	D．that were taken

题型：不详难度：| 查看答案