Present Perfect versus Simple Past - answers
- 1. We have played for one hour this morning.
 - 2. He has walked for three hours.
 - 3. I have been very busy since last week.
 - 4. I have ridden the horse this morning. ( It is 9 am )
 - 5. We have worked since early yesterday morning.
 - 6. He studied on Sunday.
 - 7. We have worked for two days.
 - 8. He helped his mother when she was sick.
 - 9. We saw the park last year.
 - 10. I have known him for many years.
 
