Vote 5 sao hộ mình nhé 

1

2.sweep 

3

4

5 wash 

6tidy

7.are/feed

II

1 have to 

2 have to 

3 have to 

4 have to 

5 has to 

6 have to 

7 have to 

I/ 

1. We...must.. arrive on time.

2. We.....mustn't..... pick flowers in the school garden.

3. We....must...... wear unifront at school.

4. Cars....mustn't...... park in front of the entrance.

5. You....mustn't...... touch that switch. It's dangerous.

6. We.....must..... be careful when we cross the road.

7. You....mustn't...... use a mobile phone in the cinema.

8. You....must...... be quiet in the school library.

9. I...must....... go home. It's too late.

10. You...must....... see that film. It's fantastic.

II/ 

1. Vietnamese children have to  wear uniform when they go to school.

2. Last night my sister was ill . We must_ call the doctor.

3. I have bad toothache . I have to  make an appointment with the dentist.

4. I don't want to have to  wait in a queue for ages.

5. She _has to  work on Saturday morning.

6. When you come to California, you have to come and see us soon.

7. This is a terrible party . We must  go home.