are they ruler 改成单数句
They are old monkeys?改成单数句
That is a yellow pineappie改成复数句They are orange改成单数句,The girl
they are on sofa 改成单数句子
they are chinese boys改成单数
they are改成第三人称单数形式
Are these your ruler?的单数句是什么
they are women docters.(改成单数句) 格式是( )is( )( )( )
Those are old libraries.改成单数句
Whose teachers are these They are ours改成单数形式
They are old insects单数句
they are orange sweaters 改为单数句
They are American teachers(改为单数句)