IV. Find the mistake then correct it. 1. After turn off the lights, she closed the door and the window. 2. I studied English for six years. 3. Because she stayed up late last night, so she feels tired now. 4. When I came, the whole family is having dinner around the table. 5. A lot of Vietnamese people have the custom to buy sugar cane on New Year’s Eve. 6. While she was dancing, the princess was seeing a witch. 7. I don’t like reading books although it’s boring. 8. The cost of living in the countryside is more low than in the city. 9. In general, putting up a tent is not as difficult than building a house. 10. Harvest is the busiest time of year in the countryside. 11. This cottage is near to the main road than that red one. 12. I prefer read comics in my free time. 13. I think learning languages are very interesting. 14. What place would you like to visit: the mountains or the sea? 15. What is life in a countryside? 16. Under the new regulations, workers have wear protective clothes. 17. When you come to Brazil, you should to tip the waiter 10% of the bill. 18. When we were young, we have to stand in a row to greet guests.