我们是英语老师 改为单数形式

我们是英语老师 改为单数形式 Those are my sisters改为单数形式是? our的单数形式是什么?our是我们,单数形式用英语怎么说? I have some interesting story books改为复数形式.写错了，是单数形式 Those are your books.改为单数形式要怎么改?------your--------.是这样的回答形式。 These are English books.改为单数形式 Do they like bananas?改为单数形式 There are English books.(改为单数形式) are these your books?改为单数形式 These are apples改为单数形式 these are apples 改为单数形式 are these apples?改为单数形式 Are these sheep怎么改为单数形式 Are those his friends?改为单数形式 are they apples?改为单数形式 they are English books.(改为单数形式) They're my uncles.改为单数形式. They are his friends改为单数形式