I'm writing a letter to my mother.怎样变成疑问句

I'm writing a letter to my mother.怎样变成疑问句 I'm writing a letter to my mother.变成一般疑问句,my必须变成your吗 I'm writing to my mother(改为一般疑问句） 1.i'm writing a letter to my penpal. I'm writing to my mother I’m (writing to my mother). I'm writing a letter 改为特殊疑问句 I'm writing a letter ____ my friend. A.to B.for C.at D.on I'm writing a letter writing,my,i,a,father,letter,to,am 排句 I am writing a letter to my pen pai now.(改为一般疑问句,并作否定回答.) I'm writing to my parents.(改为一般疑问句)