Work in pairs. Discuss these questions. (Làm việc theo cặp. Thảo luận những câu hỏi sau.) 1. Do you waste a lot of energy? What could you do to save energy?
Work in pairs. Discuss these questions. (Làm việc theo cặp. Thảo luận những câu hỏi sau.) 1. Do you waste a lot of energy? What could you do to save energy?