Complete the sentences with your own words.
1. Children dont have to ...
2. Children mustnt ...
3. Waiters dont have to ...
4. Waiters mustns ...
5. Nurses dont have to ...
6. Nurses mustnt ...
1. Children dont have to interrupt grown-ups.
2. Children mustnt be noisy.
3. Waiters dont have to pay for food in a cafe
4. Waiters mustnt be rude to clients..
5. Nurses dont have to be well-educated
6. Nurses mustnt be late for work.
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