The set of keys 后用is 或are?

The set of keys 后用is 或are? Are the set of the keys ..? 还是Is the set of keys .? （Is） the set of keys yours?为什么用Is 不用Are? A set of keys ---(be) on the table.There ---(be) a set of keys on the table.---(Are they/Is it) your set of keys? a set of keys 后用单数还是复数谓语 a set of keys is on the sofa.(on the sofa部分提问）__a set of keys?my keys are on the desk.(on thedesk部分提问) a set of keys 后面be动词用啥 A set of keys ( )(be) on the floor 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 用所给单词的适当形式填空 A set of keys _______(be) on the tab用所给单词的适当形式填空A set of keys _______(be) on the table.应该填 is 还是 are 为什么? A set of keys is here划线提问A set of keys划线提问 Here is （）?Are these yours.A.a set ofHere is （）?Are these yours.A.a set of keys B.a set of keysC.the keys D.keys填什么 ,为什么 连词成句（found,the,and,of,keys,case,is,in,a,lost,set） there is a set of keys,a book and some chalk on the desk?KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK this,yours,keys,set,is,of,the,lost,in,and,found,case（?）连词成句 A set of keys------[is/are] on the table.let me get------[it/them] A set of keys < > on the desk..请问 空里填 are 还是is ?谢谢! A set of keys------[is/are] on the table.let me get------[it/them] 超简单:A set of keys _____ on the desk.A.is B.are C.am