26.We have to test these products.
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27. They have postponed the concert.
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28.People don’t use the machine for ages.
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Chuyển sang bị động
26. We have to test these products
-> These products have to be tested.
27. They have postponed the concert.
-> The concert have been postponed.
28. People don’t use the machince for ages.
-> There machine hasn’t been used for ages.
26. These products have to be tested
27. The concert have been postponed.
28. There machine hasn’t been used for ages.