(改为一般疑问句)my pen is in the backpack.(对in the backpack提问）

My pen is in my pencil case.(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 I can give you my pen.（改为一般疑问句） It is his pen(改为一般疑问句) This is a pen.改为一般疑问句 it is a pen(改为一般疑问句) The pen is cheap改为一般疑问句 The pen is cheap.【改为一般疑问句】 this is my pen 改为疑问句 My is black pen改成一般疑问句? this is my pen.改一般疑问句 英语句型转换 This is my blue pen.改为一般疑问句 (改为一般疑问句)my pen is in the backpack.(对in the backpack提问） My pen pal is from Australia改为一般疑问句并作肯定回答