32. Remember to the lights before going to bed. A. turn B. turn off C. turn on D. stop 33. Fossil fuels are very common in our society but they
32. Remember to the lights before going to bed. A. turn B. turn off C. turn on D. stop 33. Fossil fuels are very common in our society but they the environment. A. renew B. provide C. waste D. pollute 34. What should we do to our electric bills? A. fall B. cut down C. … Đọc tiếp