they're my sisters 变单数形式
they're my sisters 变单数形式
They're my uncles.改为单数形式.
they’re interneting movies (变单数形式)
They're my cousin.(改为单数形式)
they're my sisters改为疑问句
they're my sisters对my sister提问
They're English books.(变单数形式) ______ ________ English book.
They're old watches. 改成单数形式?
They're good policewomen.(改为单数形式)
They're English books.改为单数形式
They're too big的单数形式
they're (my sisters).对括号内的提问.