Ann is writing a letter to grandma.对划线部分进行提问grandma划的线-------

Ann is writing a letter to grandma.对划线部分进行提问grandma划的线-------
Ann is writing a letter to grandma.对划线部分进行提问
grandma划的线
-------

Ann is writing a letter to grandma.对划线部分进行提问grandma划的线-------
who is ann writing a letter to?
楼上答案确实错了~原句是is writing ,提问怎么可能变成will write哪?答案中国化了~= =|||