tìm và sửa lỗi sai 1. the boys said they have to bring hom medals 2. the bicycle is such old that I don't want to use it 3. tom asked me to help him because he was doing his homework 4. my father has retired three years ago and he is now living on his pension 5. singapore is one of the country of Association of south east asian nations 6. I'll help you. I'm sure you aren't enough strong to lift it on your own 7. these vegetables should be washed and boil before we serve them 8. In the past, Jeans wore mostly by working people