BÀI 2 1. Elias Howe invented the sewing machine in 1845. 2. The librarian didn’t allow Tom to take those books home. 3. The teachers won’t teach knowledge on recycling tomorrow. 4. Hoi An attracts a lot of tourists. 5. Did all students attend first-aid course last year. 6. Farmer can milk cows twice a day. 7. The nurse taught Hoa how to give fist-aid on the phone. 8. When I came, he was repairing the computer 9. We will grow a lot of trees in the parks. 10. They are painting the living room light blue. 11. People have developed many different paper products. 12. He asked us many difficult questions. 13. They must widen the road soon. 14. She advised me to reuse milk bottles. 15. My sister cleans these rooms everyday. 16. Wastes have caused a lot of pollution. 17. When does he usually do his homework? 18. My father planted this tree. 19. He hasn’t collected the rubbish. 20. Are people using recycled paper? 21. They made us work hard every day. 22. How can we keep our fields in good condition? 23. John used to ask his father a lot of question when he was a child. 24. He said he would return the book next week. 25. No one helped him do his homework. 26. They say I am very intelligent 27. Turn off all the switches before leaving the workshop. 28. Who wrote this poem? 29. She threw everything she had to me. 30. No one likes reading that book.