II. Choose the best option A, B, C or D to complete the folowing sentences 5. People usually use compost to ......................... their fields. A. fertilize B. melt C. recycle D. reduce 6. New York is famous for its .......................... A. Statue of Liberty B. Big Ben Clock C. Opera House D. Golden Gate Bridge 7. Phong enjoys.........................flowers. A. plant B. to plant C. planting D. planted 8. I always keep the doors open ......................... let fresh air in. A. in order to B. so that C. so to as D. because 9. I don't know how.........................the game. A. playing B. play C. to playing D. to play 10. Nam asked Minh if he ......................... the Golden Gate Bridge. A. know B. knows C. knew D. knowing 11. My teacher ......................... English since 1997. A. teach B. has taught C. taught D. teaches 12. It's difficult ......................... all these things . A. remembered B. remember C. to remember D. remembering 13. The United States has a big .........................industry. A. car- make B.make –car C.making-car D. car- making 14. Do you mind if I ......................... you a question? A. ask B. asking C. to ask D. asked 15.My school will be ........................._ next year . A. building B. to build C. built D. builded 16. The Le family ......................... when the mailman came. A. slept B. was sleeping C. were sleeping D. has slept