-4/17 ; -5/29 ; -31/33

Energy is limited. We should do the following things to save energy. Firstly, we should use more efficiently. Secondly, We had better turn off the light when leaving a room or before going to bed. Thirrdly, it's good to use public transport. It will solve problems of air pollution. Moreover, We ought to use low energy light bulbs.Finally, it's advisable to reduce the use of fossil fuels. In short, we should try our best to save energy for our future.

rising intonation: Yes/no question

falling intonation: còn lại