Câu hỏi:

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

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

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

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

The result of the exam will announce in June.

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

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