A set of keys __ (be) on the floor.怎么填?

A set of keys __ (be) on the floor.怎么填? A set of keys __ (be)on the table怎么填? a set of keys 后面be动词用啥 A set of keys ( )(be) on the floor A set of keys _____ ( be ) on the table .填什么? 填be动词的适当形式A set of keys () on the table. There___（be）a set of keys on the table. A set of keys ---(be) on the table.There ---(be) a set of ke 超简单:A set of keys _____ on the desk. a set of keys is on Here _(be) a set of keys. 用所给单词的适当形式填空 A set of keys _______(be) on the tab A set of keys