They cant work quickly enough______the injured mountain climbers before dark.A.rescuingB.t

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They cant work quickly enough______the injured mountain climbers before dark.

A.rescuing

B.to rescue

C.rescue

D.to rescuing

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_________。