WE CAN TURN OFF THE LIGHTS WHEN WE GO OUT

22. Lan. ………? - Mai. We can turn off the lights when we go out.A. What about using energy-saving bulbs?B. What can we do to spend less on lighting?C. What’s the purpose of using energy-saving bulbs? D. Why should we save energy? Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combineseach pair of sentences in the following questions.