Câu hỏi:

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

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.

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

Will nuclear energy used by many countries in the world?

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

The result of the exam will announce in June.