They're my uncles.改为单数形式.
They're my uncles.改为单数形式.
they are my uncles改为否定形式
They're my cousin.(改为单数形式)
They're good policewomen.(改为单数形式)
They're English books.改为单数形式
they're my sisters 变单数形式
把They are my uncles.改为否定句
They aren;t my grandparents.(改为单数形式)
They're old watches. 改成单数形式?
They're too big的单数形式
They‘re eggs 改为单数句
they're expensive knives.改为单数句