5предложений в present continuous по в "-" и "? "

1)They aren't reading books now.
2)My friends aren't buying sandwiches.
3)These doctors aren't writing a letter.
4)I'm not looking  at new computers.
5)They aren't doing this work for their chief.

1)Why are you looking at me?
2)Are you going to buy this skirt for your sister?
3)Ar you reading a book?
4)Why are you not having lunch with your friends now?
5)Are you going to teh theatre now?