Câu hỏi:

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

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

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

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

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

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

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