Its high time we ______ cutting down the rainforests.[2006]A.stoppedB.had to stopC.shall s

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Its high time we ______ cutting down the rainforests.[2006]

A.stopped

B.had to stop

C.shall stop

D.stop

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。