Упражнение 1. Correct the mistakes if any.

1. Corrected: They have taken the dog for a walk. 2. Correct as is. 3. Correct as is. 4. Correct as is. 5. Corrected: Is it still raining? No, it has stopped. 6. Corrected: John has won the championship two times. 7. Corrected: The boys have been fishing for 3 hours. 8. Correct as is. 9. Correct as is. 10. Corrected: He has hated oranges since his childhood.