Change the following into a passive

giúp tui với
 
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Practice 1 Change the following into pa
1. Nobody will know our plans for the project.
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2. Readers mustn't take these books home.
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3. We can make some kinds of cake without flour or butter.
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4. People can buy tickets for the show in advance.
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5. Passengers can leave their luggage in the lounge.
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6. Can we remove the language barrier?
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7. If they cannot fix a satellite, they will leave it floating in space forever.
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8. What should we do to help people in the flooded area?
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