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	23/08 10:46:07
	Tiếng Anh - Lớp 9 \| Tiếng Anh \| Lớp 9

We have made great progress in industry, science and medicine. (passive voice)

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21. We have made great progress in industry, science and medicine. (passive voice)

22. Sam killed a lion last week in the park. (passive voice)

23. You must hand in your report before the end of this month. (passive voice)

24. Have you just finished the job when the factory closed? (passive voice)

25. Can he open that box? (passive voice)

26. He should finish the report yesterday. (passive voice)