请把这些句子改成否定句,和疑问句,和对划线部分提问
问题描述：
请把这些句子改成否定句,和疑问句,和对划线部分提问
I am speaking.You are having class.he is reading a book these days.Listen,she is singsing
答
1.I am not speaking.Are you speaking?What are you doing?2.You are not having class.Are you having class?What class are you having?3.He isn't reading a book these days .Is he reading a book these days?...