I. True or False. Tick the correct box.
True False
1. You must close the door before going out.
2. You mustn‟t do your homework.
3. You mustn‟t obey your parents.
4. You must go to school on time.
5. You must walk on the grass.
6. You mustn‟t shout at me.
7. You must brush your teeth before going to bed.
8. You mustn‟t eat fruit and vegetables.
II. Complete the sentences with must or mustn't.
1. You help your mother with the heavy box.
2. It‟s very cold. You go out.
3. You look after the house when your parents are awaff
4. You wash your face in the morning.
5. You take your umbrella because it‟s raining.
6. You drink that milk, it‟s very hot.
7. You make noise in the class.
8. It‟s dangerous, you touch that wire.
9. You be rude to your teacher.
10. In the class, you study hard.
III. Give the correct form of superlative.
1. This is a TALL building.
→ This is the building in London.
2. That was an EASY exercise.
→ That was the exercise of the test.
3. This is a COMFORTABLE armchair.
→ This is the armchair in this shop.
4. This is a BIG cheese burger.
→ This is the cheese burger of the McDonald‟s Company.
5. That was a very BAD conversation.
→ That was the conversation I have had.
6. That was a DIFFICULT exercise.
→ That was the exercise of the test.
7. He‟s got a GOOD pen.
→ He‟s got the pen of the class.
8. This is an INDIFFERENT pupil
→ This is the pupil of my class.
9. He is a FUNNY boy.
→ He is the boy in the world.
10. He is LESS young than the others.
→ He is the young student of my class.
Mustn't or don't/doesn't
1. Visitor __DOESN;T___ feed the animal
2. Tim __DOESN'T___ wear uniform at school
3. These are life in the building, so I ______DON'T__ climb the stairs
4. Staff ____DOESN'T__ smoke when serving customers
5. Sally is extremely rich. She ___MUSTN'T_____ work
6. I don't want anymore to know about our plan. You _MUSTN'T___ tell anyone
7. You __MUSTN'T__ be a good player to enjoy a game of tennnis
Mustn't or don't/doesn't
1. Visitor ___mustn't__ feed the animal
2. Tim __doesn't___ wear uniform at school
3. These are life in the building, so I __mustn't______ climb the stairs
4. Staff ____mustn't__ smoke when serving customers
5. Sally is extremely rich. She ___doesn't_____ work
6. I don't want anymore to know about our plan. You __mustn't__ tell anyone
7. You __mustn't__ be a good player to enjoy a game of tennnis