I'm writing a letter

I'm writing a letter I‘m writing a letter.改成问句 I'm writing a letter now 1.i'm writing a letter to my penpal. I'm writing a letter 改为特殊疑问句 I am writing a letter. I not writing a letter.改错 I am writing a letter是什么意思 I am writing a letter.提问： I am not writing a letter.改错、 I ( ) writing a letter to Mary 填空 i'm reading a newspaper ___ Mr Zhang is writing a letter