Câu hỏi:

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

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

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

Will your class visit the hydro power station in Hoa Binh next week?

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

The government has warned that Britain will face power ___________ in the coming winters.

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