改单数句子They are English books.(改为单数句)It ＿ ＿ English book.横线内各填

改单数句子They are English books.(改为单数句)It ＿ ＿ English book.横线内各填 they are English books.(改为单数形式) They are some English books.改为单数句 These are English books .（改为单数句 They are English jeeps.改为单数句 They are English exercise-books.(改为单数句型） They are English books (5改为单数形式） They're English books.改为单数形式 将："Those are English books."改为单数句子 are the English books on the bed改为单数句子 are those our english books?改单数 These are English books.改为单数形式