There are some tips to save power that I will show you. Firstly, we should use energy saving light bulbs in our house, It will help us to reduce our electricity bill. Secondly, we should use public transport if we need to go long distance or we can use bicycles for short distances, I think it is good for our health and economical. And remember, before go to bed, we must turn off all lights and other unused electrical devices.
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- 1 sentence in the active future simple tense

- 1 sentence in the passive future simple tense