(a)   is made from plant waste and animal manure. ( khí sinh học)

Using (a)   for cooking is polluting, and it is harmful. ( than đá)

A (a)   power station will be built in this area next year. ( thuộc về nước)

(a)   power can provide enough electricity of the world’s need, but it is dangerous. ( thuộc về hạt nhân)

We are using (a)   energy sources like wind and solar energy to solve the problem of pollution. ( có thể tái tạo)

Nowadays, (a)   becomes scarce and expensive. ( khí thiên nhiên)

The smoke from burning coal is (a)   to human health.  ( độc hại)

Solar energy is (a)   and it can be replaced easily. ( dồi dào)

Wind is one of the popular (a)   of energy.  (nguồn)

(a)   energy is used by many countries around the world. ( thuộc về mặt trời)

The whole country is facing an (a)   problem. ( to lớn)

The government should pass laws to protect (a)   resources. ( không thể tái tạo)

If  we don’t save energy, we will soon (a)   of it. ( can kiệt)

Renewable energy such as solar power is (a)   ( không giới hạn)

Chia động từ trong ngoặc ở thể chủ động hoặc bị động thì tương lai sao cho thích hợp:

My grandfather doesn’t believe that electricity  (generate)……..by the wind.

(a)