Exercise 3: Rewrite the sentences to have the same meaning as the original ones.

1. Protecting endangered animals is important to save our environment.
   → It’s important to protect endangered animals to save our environment.

2. We should recycle plastic bottles to protect the environment.
   → Plastic bottles should be recycled to protect the environment.

3. We continue to throw waste into the ocean, the aquatic animals can die.
   → If we continue to throw waste into the ocean, aquatic animals can die.

4. They plant more trees. They want our environment to be better and cleaner.
   → Because they want our environment to be better and cleaner, they plant more trees.

5. The air is polluted because there are a lot of factories here.
   → There are a lot of factories here, so the air is polluted.

Exercise 4: Listen and fill in the blank with a word.

1. I hate pollution. It makes me really (1) angry.
2. I think pollution is greed. People don’t care about the environment, so they (2) pollute the air just to make lots of money.
3. Big (3) companies are the worst.
4. They pretend they’re not polluting. They have the money to say they are “green.” Pollution (4) affects us all.
5. We are all less healthy because of companies that pollute the air or our rivers. Everybody needs to think about how we can (5) reduce the amount of pollution we create.
6. Not using the car when we can walk is one way. Turning off (6) lights we don’t need is another.
7. Barack Obama says he’s going to do his best to help the (7) environment.
8. I really hope he does because if (8) pollution gets any worse, we’ll be in seriously big trouble.