Câu hỏi:

 ___________ energy is produced by collecting sunlight and converting it into electricity.

When you save energy, you not only save money, you also reduce the demand for ___________ such as coal, oil, and natural gas and that is a great way to play a part in saving the planet.

Laos and Cambodia have big plans for building up to 11 ___________ on the lower Mekong.

I'm afraid that I won't come to your house tomorrow.

There are many available ___________ power sources in Vietnam including sun, wind, water, etc.

They will destroy the forest to build a hydro power station.

When will the non-renewable energy sources be use up?