sửa lỗi sai chữa lại cho đúng 1. After each lesson we often have a ten-minutes rest 2. Million of foreign visitors come to VN every year 3.From at nine in the morning until four afternoon Mr.Tuan works in the fields with his father 4. My Dad always has a three-weeks vacation 5. My father always has a lot of housework to do 6. There are less TV programs for teenagers than there are for adults 7. we are bought this house since four years 8. Making models are very interesting 9. They have lived in Ha Noi since they leave HCM city 10. we didn't write to each other for two years 11. There are a little activities that can do after the meeting 12. The boy laughed happy when he played with the teddy bear 13. I have less books in English than my classmate 14. We are going to have a two-weeks summer vacation in Hue next month