It’s high time that we (do)______something to stop pollution.did在 It is (high/ab

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问题 It’s high time that we (do)______something to stop pollution.

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答案 did

解析在 It is (high/about) time that...句型中应采用虚拟语气，表示“到了(该立刻)做某事的时候，早该做……”，其从句谓语用一般过去式。

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[originaltext]W:Paul,youhavetohelpme.M:Noproblem.W:Somethingiswro