this is a red pen.and that is a green pen.(改为同义句) this is a
this is a red pen.and that is a green pen.(改为同义句) this is a
this is a red pen同义句转换
this is a pen.改为复数句
this is red a pen的提问
this is a red pen怎样改为一般疑问句
This is Peter's pen and that is ( )pencil,( )a red pencil.(h
is,a,this,pen,red,连词成句
This is a pen and that is a knife改为复数形式
This is his green pen.That is a card.It is an orange.Is that
This a pen.that is a pen,什么
This is a pen.(改为复数形式)
This is a pen.改为一般疑问句