Obligations: Must, Have to, Don't Have to

Practice strong and weak obligations in present, past, and future

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60.1 Match the Situations to the Correct Obligations

Example: You really must go to the doctor. — I have a headache and feel ill.
Phone
Doctor
Hot
Doctor
Swimming

60.2 Complete the Sentences Using "Must Not" or "Don't Have to"

Secret
Tennis

60.3 & 60.4 Rewrite the Sentences in the Future / Past

1. Students must have a laptop. → Students will have to have a laptop.

Answer Key

60.1 Match Obligations
1. You must call her right away!
2. You have to go to the doctor. I feel ill.
3. You mustn't touch that. It's hot.
4. You really must go to the doctor.
5. You don't have to come swimming, but you are invited.
60.2 Complete Sentences
1. must not
2. don't have to
3. must not
4. don't have to
5. must not
6. don't have to
60.3 Future
1. Students will have to have a laptop.
2. You must inform your manager.
3. Brenda has to go home early today.
4. She must pay for the damage.
60.4 Past
1. Joe had to come in early.
2. The manager's must apologize.
3. Greg must eat all the broccoli!
4. I must rest all this week.