Lesson 7

Review

1. Complete the sentences with the words in the box.

1. Solar energy and wind power are two forms of renewable energy.

2. If you burn fossil fuels they cause air pollution.

3. Trees absorb carbon dioxide from the air.

4. Rubbish that isn't recycled is put into landfill sites.

5. Seagrass grows in the sea along the coast.

6. Global warming is a serious problem.

2. Complete the sentences with the to + infinitive or -ing form of these verbs.

1. If we don't avoid cutting down our rainforests, we won't stop climate change.
2. We all need to use more solar energy.
3. If we keep putting rubbish in landfill sites, we'll make more methane gases.
4. I decided to buy a water bottle that I can reuse fromthe shops.
5. Miss Huda wants to start a recycling project at school.
6. We enjoy recycling our rubbish. It's fun and it helps the environment.