Câu hỏi:

Choose and circle the best answer.

Wind, hydro and solar are ……… energy sources.

They will install solar panels on the roof of our house next week.

→ Solar panels …………………………

Put the verbs in correct tenses

………..you (wait) ………………………for her when her plane arrives tonight?

What is the distance between Hanoi and HCM city?

→ How far ……………………………………

Some new energy-saving bulbs …………. in the dining-room.

We will cut down on the use of natural gas because it is …….… & harmful to the environment.

People won’t burn fossil fuels for energy in the future.

→ Fossil fuels …………………………