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Lots of waste has been dumped into the river ,which had led

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Lots of waste has been dumped into the river ,which had led to ____
A lots of fish having been killed B kill lots of fish C lots of fish being killed D lots of fish to kill请排除着做,我选的是第三个,你讲讲为什么你选什么么,谢谢
Lots of waste has been dumped into the river ,which had led
C lots of fish being killed
因为lead to里的to是介词,所以不能直接跟动词,B排除
A里是 过去分词的完成时形式,完成时强调动作发生在主句动作之前,而题目里从句的动作(鱼被杀死)应该是在主句动作(垃圾被倒入河里)之后,所以错误
D不定式表将来,指动作未发生,同样,题目了鱼已经被杀死,动作已发生,所以也错误