They are on the sofa.改为单数形式
They are on the sofa.改为单数形式
They are on the sofa改为单数句
They are on the sofa 的单数句是什么!
they are on sofa 改成单数句子
They are on the sofa改为否定句
They are on the sofa.是什么意思?
they are English books.(改为单数形式)
They are his friends改为单数形式
They are Chinese【改为单数形式】
are they apples?改为单数形式
they are your sons改为单数形式
they are nurses改为单数形式