Câu hỏi:

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

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

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

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

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

Will nuclear energy used by many countries in the world?

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