15. One can solve it. 16. A child cannot lift it.17. He could beat him.18. I


15. One can solve it.
16. A child cannot lift it.17. He could beat him.18. I could help you.19. You may win the race.20. He might solve it.21. They may defeat us.22. Our team may win the match.23. You must help the poor.24. You must not pluck flowers.​


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