Those are her tapes players.求解这个句子里的错误在哪?

Those are her tapes players.这里面有一个单词出错,是tapes 不能加s吗?怎么翻译? Those are her tapes players.求解这个句子里的错误在哪? These are ( )video tapes,those are ( )CDs.A.I;they B.my;her C.our;he D.your;she 改错 These are her videos tapes急 what are those?those are my vedio tapes.这样回答对吗,为什么? the video tapes are in her drawer改单数句 Those are her books her画线 提问 Those are her photos改为单数形式~ Are those her friends?(作否定回答) Are those her erasers改为单数句 Those her pencils are red 改错 Those are her jeans改为同义句 those are her cousins （改为单数形式) those are her books 改成单数 Those her pebcils are red .改错 those are her 后面应填什么? Those are her trousers.(改成同义句)Those trousers are__. Those are her friends.中的her是什么句子成分