In my opinion, we ought to save energy because energy is very important in our life. Firstly, we should save water. We can do any activities with water. Saving water is easy. However, some people don't know how to save water. Try to reduce the amount of water tour family uses. Instead of using the bathtub, we should use the showers. Because the bathtub uses twice as much water as showers. Beside, we should check the pipes usually and remember to turn off the faucet's water. Secondly, we should save electricity. We ought to turn off the light when we go out orin unnecessary situation. Use the fan to replace the air conditioner to save electricity. On the other hand, we do not use many electrical appliances during rush- hour such as electric iron, washer,... And use the saving-energy equipment. Thirdly, we should save gas. Instead of going to school by motorbike or car, we should go to school by bicycle or public transport such as bus, subway,...Moreover, we should prepare the food before cooking with the gas stove to save gas. In short, the energy source is not endless, so we must save energy to protect our life. Let's save energy together.