It’s about time we ______ pouring waste water into the river.A、had to stopB、sha

游客2024-09-20 14

问题 It’s about time we ______ pouring waste water into the river.

选项 A、had to stop
B、shall stop
C、stopped
D、stop

答案 C

解析考查固定句型It is time…的用法。It is(high／about)time(that)后面的从句谓语动词要用过去式或“should+动词原形”(较少见，且should不可省略)。A项had to stop表示“一定要停止”，B项是将来时，D项动词原形，都不符合条件，答案为C。

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[originaltext]M:HowlongcanIkeepthebooks?W:Forthreeweeks.Youmustre