单数句是啥?These are our broths(改为单数句） _____ ______ my brother.应填啥?

These are our apples改为单数 these are our apples改为单数句子 These are our books改成单数 These are our books.(改成单数） 单数句是啥?These are our broths(改为单数句） _____ ______ my brother.应填啥? These are our sheep. （改为单数句子） 将These are our shirts变为单数句子 These are buses单数急用 These are glasses改成单数 Those are (our scarfs) 改否定句 一般疑问句 肯定回答 括号提问 These jackets are nice 改单数 These are our _____ (watch) These are boxes. (改为单数句） These are oranges.(改为单数句） These are his brothers 改为单数句 These are English books .（改为单数句 These are English books.改为单数形式 These are apples变成单数形式 These are bedrooms.(变单数）回答