i lost a set of keys ,i can't find them 还是it.

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/09/20 19:57:13

them
他显然要找的是key 而不是那个set
再问：但我查了一下，a set of keys 是作为一个整体，单复数看两次set 而且谓语动词也是根据set填写，如是a set of keys 那么谓语动词就要用is ，但就是用代词去代指时就搞不明白了咯
再答： A number of people are playing football over there. A lot of people are playing football over there. 量词对不，不是绝对的吧。 a set of keys-> 一串钥匙你找的是串，还是钥匙。哈哈

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