these are my brother and sister 里的brother和 sister要加s吗

these are my brother（改为否定句） these＿ ＿ my brother. whose shoes are these oh,（ ）my brother‘s. These are the books( ) my brother. 为什么填belonging to 用are brother two these boys my 造句,句号 These are my brother's ties and shirts对my brother's进行提问 cousin brother my and my boys two thesecousin brother my and my boys two these are连词成句 these are my brother and sister 里的brother和 sister要加s吗 two is and these my sisters my that brother are连词成句! These notebook are my brother's.are those all __(your)? that is my brother改为一般疑问句 are these books 改为单数句 英语填空：These books are for c_____ .Let us buy some for my younger brother. 从中找出一个错误：These two boys are my brother.______ 单数句是啥?These are our broths(改为单数句） _____ ______ my brother.应填啥? These are my friend These are ()() my books. these are my feet . These are my grandparents. That is his parents That is his sister This is my brother These are my friend 以上改一般疑问句