they have some ehglish books 改为单数形式
they have some ehglish books 改为单数形式
They have some English books 改为单数形式
They have some English books改为单数形式
They have some erasers改为单数形式.
They have some oranges(改为单数形式)
they are English books.(改为单数形式)
They're English books.改为单数形式
They have some good books【用he作主语改为单数句】
They have some books(改为一般疑问句)
They have some pots(改为单数)
They have some knives.改为单数
They are some English books.改为单数句