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it'sabouttimethatwe()measurestopreventaiit'sabouttimethatwe()measurestopreventairfrompollutionA.takeB.tookD.shouldtakeC.willtake

题目详情
it's about time that we( )measures to prevent ai
it's about time that we( )measures to prevent air from pollution A.take B.took D.should take C.will take
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标准答案:
这句话没有上下文的吗? 因为是一个定语从句,并非宾语和状语从句,定语从句的时态几乎是都可以用的.而且从汉语语义上几乎都可以选择.