this is my pen 改为疑问句

this is my pen 改为疑问句 This is a pen.改为一般疑问句 this is my pen.改一般疑问句 this is my pen 改为同义句 英语句型转换 This is my blue pen.改为一般疑问句 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? My pen is in my pencil case.(改为一般疑问句) this is a red pen怎样改为一般疑问句 My pen is in the pencil case改为一般疑问句? There is a pen in my bag.【改为一般疑问句】 that is my pen pal 改为一般疑问句 The letter is from my pen pal.(改为一般疑问句) My pen pal is from london?改为一般疑问句 This is my dictionary.改为疑问句 This is my eraser 改为一般疑问句. This is my uncle (改为一般疑问句) this is my friend改为疑问句 This is my ciassroom.(改为疑问句）