It’s high time we _______ cutting down the rainforests.

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问题 It’s high time we _______ cutting down the rainforests.

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

答案A

解析 It is (high) time (that)后面的从句谓语动词要用过去式或“should+动词原形”,且should不可省略,故A项stopped为答案。B项had to stop表示“一定要停止”,C项是将来时,D项动词原形,都不符合条件。
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