I. 1. is being 2. has having 3. listens listening 4. passes passing
5. works working 6. sits sitting 7. walks walking 8. runs running
9. does doing
II. 1. goes 2. doesn't speak, speaks 3. am, are, is
4. sing 5. reads, is listening 6. are
7. begins 8. Does 9. are 10. are
III. 1. isn't 2. don't 3. won't 4. can't
5. aren't 6. doesn't 7. get up 8. go to school
9. watch TV 10. go to bed 11. come in 12. go home
IV. 1. A 2. A 3. B 4. B
5. B 6. C 7. B 8. B