This is my a pen?对还是This is a my pen?对This is my pen？

This is my a pen?对还是This is a my pen?对This is my pen？ this is a my pen 是This is my blue pen 还是This is my a blue pen有助于回答者给出准确的答案 This is my blue pen.(改为一般疑问句）()this () blue pen?This is a white key.(对划线部分提问)()()this? This is a pencil and a pen还是This are a pencil and a pen,二楼说的也许对，但我只问用IS还是ARE What is this 是This is a pen.还是.It is a pen?为什么? what is that in English?是It is a pen还是This si a pen还是That is a pen 为什么说This is my a pen是错的? 为什么不能说 This is my a pen A:that's your pen.___ is my pen B:Do you __ this is interesting? this is a pen对a pen提问— —this? 英语初一题目询问1.My mother is OK.(对划线部分提问） _____ _____youe morther?2.Is this a pen.(作出否定回答） _____,is _____. 请问是No,is not还是No,is isn't? This is not my pen.M______ is This is a pencil and a pen还是These are a pencil and a pen 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）. what is this It is a pen.还是This is a pen好这个问句碰到选项,该选哪句?