this is a pen对a pen提问— —this?

This is my a pen?对还是This is a my pen?对This is my pen？ this is a my pen This is a nice pen. this is a pen对a pen提问— —this? This a pen.that is a pen,什么 This is a pen in English.对 a pen 划线提问 This is a white pen对其中a white pen提问 This is a pen.(this)are pencily This is ( a pen) in English ? 对划线部分提问 This is a pen.对划线部分提问 ___ ___? This is a pen.(对画线部分提问）. this is a pen对a pen the quilt is white对white cindy is fine对fine 提问 This is a pen.就划线提问 this is a pen.改为复数句 this is a pen改成一般疑问句 This is a pen.改为一般疑问句 is this a youe pen 怎样改错 This is a nice pen.的问句