I'm writing a letter to Dr.zhou_____ is worried about my hea

1.i'm writing a letter to my penpal. 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 a letter ____ my friend. A.to B.for C.at D.on I'm writing a letter I'm writing this letter to tell you about my new home的to在此的解 I'm writing a letter to my mother.怎样变成疑问句 writing,my,i,a,father,letter,to,am 排句 The reason---I'm writing is that I want to tell you about a the reason ___ i'm writing to you is to tell you about a par writing my a letter brother is I‘m writing a letter.改成问句 I'm writing a letter now