All possible means ____ to prevent the air pollution, but the sky is still not c - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

All possible means ____ to prevent the air pollution, but the sky is still not clear.

A．is used

B．has been used

C．are use

D．have been used

答案

解析

试题分析：句意：所有可能能阻止大气污染的方法都试过了，但是空气依然不干净。means单复数同形，在这里是复数,这里强调过去的动作的影响所以用现在完成时更好。故选D。
考点: 考查动词时态的用法。

核心考点

试题【All possible means ____ to prevent the air pollution, but the sky is still not c】；主要考察你对一般现在时等知识点的理解。[详细]

举一反三

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B．took

C．takes

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A．have lived

B．was living

C．lived

D．had lived

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A．has left

B．left

C．was leaving

D．had left

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A．interviewed	B．are interviewing
C．are interviewed	D．are being interviewed

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—Why_______ me earlier ? I’ve been looking forward to it.

A．hadn’t you told

B．don’t you tell

C．not to tell

D．didn’t you tell

题型：不详难度：| 查看答案

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