超简单:A set of keys _____ on the desk.

超简单:A set of keys _____ on the desk. there is a set of keys,a book and some chalk on the desk? A set of keys < > on the desk..请问 空里填 are 还是is ?谢谢! A set of keys _____ ( be ) on the table .填什么? There___（be）a set of keys on the table. A set of keys ---(be) on the table.There ---(be) a set of ke a set of keys is on a set of keys 后面be动词用啥 A set of keys ( )(be) on the floor 麻烦各位帮我看一个英语句子 There is a set of keys on the desk 是对还是错? A set of (钥匙)is on the desk . A set of keys a set of keys is on the sofa.(on the sofa部分提问）__a set of key