英文题- what ()these keys?Are they yours?- no,they aren`t.They are Anna`s.

题目

英文题- what ()these keys?Are they yours?- no,they aren`t.They are Anna`s.

答案

本人认为可以填 about.通常是这么问答的：
what are these?these are keys.
whose keys are they?they are Anna's.