Change the following sentences to passive voice

Change the following sentences to passive voice.
1. They have discussed the pollution problems since last month
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2. Is he going to repair this bicycle
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3. Have you sent the invitation cards to your friends?
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4. My father moved the sofa into the living room.
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5. They inform me that the manager is going to travel to Germany.
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6. We believed that Linda would pass the driving test.
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7. Gary gets his brother to clean his car.
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8. He will have a veterinary surgeon examine her cat.
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9. People don't force the children to work hard.
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10. Police advise drivers to drive slowly and safely.