34. The lake used to be polluted, but now something_____ to make it clear again.A.is being doneB.doe

题目简介

34. The lake used to be polluted, but now something_____ to make it clear again.A.is being doneB.doe

题目详情


34. The lake used to be polluted, but now something_____ to make it clear again.
A.is being doneB.doesC.is doingD.is done
题型:单选题难度:偏易来源:不详

答案

A

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