Ответьте на вопросы.
1.What are you doing?
2.Are you opening or closing the book?
3.Are you reading now?
4.What are you reading?
5.What is your friend doing?
6.Is he reading now?
7.Are they looking at me?
8.Who are they looking at?

I'm eatingI am closing the bookNow I am reading an interesting bookI am reading a bookHe is jumpingNow, he is not. No, they aren't. They are looking at him