Every means ______ tried but without much result.A．has beenB．have beenC．areD．is

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Every means ______ tried but without much result.

A．has been

B．have been

C．are

D．is

答案

解析

考查主谓一致。Means，方式，方法，是单复数同形的词，谓语动词的单复数要根据means的单复数确定；因为是Every means，每种方式，所以谓语动词用单数；且根据句意，每种方式已被试过，但没有多大效果。所以用现在完成时态。选A。

举一反三

I’m going to see what Dad is________. Two hours is a long time to take over a coffee.

A．up

B．up to

C．up against

D．up with

题型：不详难度：| 查看答案

For many years, people________ electric cars. However, making them has been more difficult than predicted.

A．dream of

B．had dreamed of

C．dreamed of

D．have dreamed of

题型：不详难度：| 查看答案

It’s very important for a student to ________ a good state of mind while taking the college entrance examination.

A．keep out

B．keep on

C．keep up

D．keep off

题型：不详难度：| 查看答案

Didn’t it ever________ to you that one day you would be fired because of your carelessness?

A．dream

B．occur

C．expect

D．happen

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—Oh, dear. What happened?
—I ________ on the shiny floor and fell.

A．skipped

B．jumped

C．attacked

D．slipped

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