I) câu bị động:
1) Somebody will clean the rôm later
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2) You mustn't often this parcel until Chrismas Day
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3) They can't make tea with cold water
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4) The students will hold a meeting before the teacher's Dair
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5) People can recycle ties to make pipers or flour coverings
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6) They should send applications before December
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(mink đag cần gấp)