Rewrite the sentences in passive voice

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Exercise 6 Rewrite the sentences in passive voice.
1. Mary can answer this question.
2. She would carry the suitcase.
3. You should open the window.
4. Tom might play cards.
5. You ought to wash the clothes.
6. He must fill in the form.
7. They need not buy cheese.
8. He could not read the sentence.
9. Will the teacher test our English?
10. Could Tim lock the door?
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11. You may forget the rules quickly. =>
12. They should cancel the match.
13. The teacher can't persuade her. =>
14. They need to repair my car.
15. Who should pay the damage?
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