Câu hỏi:

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

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

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

 ___________ can be an excellent source of free, renewable energy for poor farmers.

I hope the storm won't be destroyed many buildings in the city.

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

Two layers of glass in the window will be stopped the heat going out.