Change these sentences into passive.
1. People should save pandas from extinction.
2. You can't wash this suit. You must dry - clean it.
3. My parents used to give me lucky money on New Year's Day.
4. You ought to do your homework every day.
5. You can buy videos like this one anywhere
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6. Thomas Edison invented the phonograph in 1877.
7. The manager always welcomes new employees.
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8. Has anyone shown you what to do?
9. The scientists are studying the problem carefully.
10. The police found two children in the forest.