Ex.13
2.is not 3.is workinget 4.works 5.is 6.is doing 7.does 8.are 9.are playing 10.play 11.Do you know 12.am
Ex.14
2.don't understand 3. do you not ask 4.don't like 5.do you not like 6.always shouts 7. Does he shout 8.don't work 9.don't do my homework 10.shout