Vocabulary

Complete the sentences with the words in the box.

1. I believe that the only way for us to reduce global warming is to cut down on .
2. Many species are threatened with due to deforestation and loss of habitat.
3. Motor vehicles running on petrol are responsible for a large amount of carbon dioxide .
4. There are many ways for us to reduce our in order to save our environment.

Vocabulary

Complete the sentences with the words in the box.

1. More trees should be planted as they carbon dioxide and give off oxygen.
2. The alarming rate of results in damage to the quality of the land.
3. Rainforests have the highest species on the earth.
4. Global warming has proved truly for the environment.

Grammar

Rewrite the sentences, using perfect participles.

1. After the students had learnt about the benefits of recycling and reusing, they started collecting waste paper, bottles, and cans to recycle and reuse.

2. Since Mai had refused Nam's offer of a lift in his car, she had to walk home.

3. After Ha had read some documents about Green Earth, she decided to join the organisation.

Grammar

Rewrite the sentences, using perfect participles.

1. Since the farmers used too much chemical fertiliser on their farm, they now have to drink polluted water.

2. After she replaced all the light bulbs in her house with LED lights, she saved a lot of money on her electricity bills.

3. Since we have become too dependent on the use of electricity, we have to find alternative sources of energy before fossil fuels run out.

Grammar

Rewrite the sentences, using perfect gerunds.

1. Tonya had dumped a lot of rubbish on the beach. She was strongly criticised for that.

2. Sam had not worked hard enough in his previous job. He regretted it.

3. Tony had rescued the kids from the fire. People admired him for that.