Read the following passage and circle the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks. With the development of science and technology, more and more (4)…………… is used everyday. Nowadays, many (5)……………areas in Vietnam have been electrified, and more energy is needed. If everyone (6) ……………. energy, it will quickly run out. (7) ……………. at school should learn how to save energy, for example, they should turn off the electric lights when they leave their classrooms. Question 4: A. energy B. money C. cars D. books Question 5: A. rural B. rich C. city D. urban Question 6: A. wastes B. waste C. save D. saves Question 7: A. doctors B. drivers C. students D. farmers