Is this chair[she her hers]?还有说明一下为什么选那个答案

Is this chair[she her hers]?还有说明一下为什么选那个答案
Is this chair[she her hers]?
还有说明一下为什么选那个答案

Is this chair[she her hers]?还有说明一下为什么选那个答案
Is this chair hers?
肯定句：This chair is hers.意思：这椅子是她的.前者是后者.主语是名词,表语也是名词.所以疑问句就选择hers

her
很简单，把疑问句变成陈述句就是This is her chair.