Put the correct form of the verbs in brackets. 

1. At present, global demand for energy_________(increase) rapidly.

2. Three years ago, we_______(install) a solar water heating system on our roof.

3. What________(happen) if non-renewable resources run out?

4. A small recycle plant_______(build) on the river in ten years' time.                     .

5. If the electricity_______(make) from wind turbines, it is green

Put the words into groups. 
peaceful / hot / convenient / easy / expensive / modern / cheap / dangerous / clean 

 one-syllable word :

two-syllable words: 

three-syllable words: 

unlimited / dangerous / available / exhaustible / polluting

1. Nuclear power produces a lot of energy but it is__________ .

2. Renewable energy  is also called "clean energy” because it is not__________ .

3. Coal, oil and natural gas are________ , so we have to use them economically. 

4. Biogas is an________  source of energy for cooking in rural area. 

5. Natural resources are not_________ , so we mustn't waste them.

giúp mk