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Th problem which the air pollution in cities has become more and more serious.
这个句子用which 还是只能用of
人气:471 ℃ 时间:2020-03-08 22:38:45
解答
只能用of,用which不正确.
因为用which的话就是用which引导一个定语从句 “which the air pollution in cities”,而这个句子是没有谓语的,所以不正确.
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