A set of keys谓语动词用单数吗?

A set of keys谓语动词用单数吗? a set of keys 作主语时,谓语动词用单数对吗 a set of keys 后用单数还是复数谓语 a set of keys作主语是谓语动词使用单数还是复数 a set of keys 作主语时谓语用单数还是复数? a set of keys做主语动词用什么形式 A set of keys 后面动词用什么形式?详解 a set of keys 后面be动词用啥 A set of keys ( )(be) on the floor a set of keys 后面的动词用什么形式啊?是单数还是复数啊?还有a pair of 什么的. A set of keys是单数还是复数? this is换he/she is,a set of keys换keys可以吗?为什么a set of keys是复数,下面一句却是is this your set of keys.is不是单数用的吗?什么情况下用at?什么情况下要换第三人称形式?什么单词前面要加the?什么情况 My glasses ( ) under the bed.谓语用单数还是负数?a pair of glasses谓语动词用单数还是负数? a series of 和a pair of 后面谓语动词用单数还是复数? a survey of a survey of修饰主语谓语动词用单数还是复数并举例说明, a lot of 和 plenty of的谓语动词用单数还是复数 a large number of和 large numbers of 后面的谓语动词用单数还是复数 a number of 谓语动词用单数还是复数,the number of呢? 请举例. a bunch of/bunches of+n.谓语动词用单数复数是看量词还是名词?