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1. 1. mustn't 2. must 3. mustn't 4. must 5. mustn't 6. mustn't 7. mustn't 8. must 9. must 10. must
5. 1. We must 2. We mustn't 3. We mustn't 4. We must 5. We must 6. We mustn't 7. We must 8. We must 9. We mustn't 10. We mustn't 11. We mustn't 12. We mustn't 13. We mustn't 14. We mustn't
6. 1. B: shouldn't 2. B: should 3. A: should B: should 4. A: shouldn't
1. mustn't
2. must
3. mustn't
4. must
5. mustn't
6. mustn't
7. mustn't
8. must
9. must
10. must
5.
1. We must
2. We mustn't
3. We mustn't
4. We must
5. We must
6. We mustn't
7. We must
8. We must
9. We mustn't
10. We mustn't
11. We mustn't
12. We mustn't
13. We mustn't
14. We mustn't
6.
1. B: shouldn't
2. B: should
3. A: should
B: should
4. A: shouldn't