Câu hỏi:

Will nuclear energy used by many countries in the world?

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

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

In India, the demand for ___________ has always been more than the supply.

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

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

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