（Is） the set of keys yours?为什么用Is 不用Are?

Are the set of the keys ..? 还是Is the set of keys .? 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) The set of keys 后用is 或are? （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? 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） this,yours,keys,set,is,of,the,lost,in,and,found,case（?）连词成句 There___（be）a set of keys on the table. A set of keys is here划线提问A set of keys划线提问 there is a set of keys,a book and some chalk on the desk?KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 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 teachers',in,a,keys,library,is,of,set,the 连词成句 look a set of keys is so intertested for the kds 的意思 here is a set of keys.改为否定句