page.31, ex. 39

1. is sleeping
2. is reading
3. are swimming
4. is paying
5. are running
6. is calling
7. is drinking
8. is reading
9. are enjoying
10. are eating
11. is not eating
12. is feeding
13. are having.

page 32, ex. 41

1. Wrong!
2. Wrong! Grandpa is sleeping.
3. Wrong! They are not playing with the cat. They are watching TV.
4. Wrong! The boys are not drinking Coke. They are playing with the cat.
5. Wrong! Mother is eating.
6. Wrong! Sue and Pam are not watching TV. They are listening to music.
7. Wrong! Grandma is not writing. She is talking on the phone.
8. Wrong! The cat is not eating. It is playing.