Modal Verbs

Name Surname

1. We.... all do what we can to protect the environment.

• mustn't
• should
• might

2. You ... buy products made from endangered species.

• mustn't
• don't have to
• ought to

3. People ... use their cars for short distances when they can walk.

• mustn't
• don't have to
• need

4. More people ... recycle.

• ought to
• mustn't
• can't

5. We ... damage coral reefs.

• needn't
• mustn't
• are able to

6. Making your house environmentally friendly ... cost a lot of money.

• needn't
• mustn't
• must

7. We ... put our litter in a bin and not throw it on the street.

• mustn't
• can
• ought to

8. It's a good idea to adopt an animal: more people ... do it.

• must
• should
• may

9. Last year, Fre fighters in Canada ... puut out about 9,000 forest fires.

• might
• ought to
• had to