It looks like you have a list of sentences and tasks related to passive voice and sentence transformation. Here's how to transform the sentences into passive voice:

1. **Many rubber plantations can be found on the map of our country.**
2. **Things made of rubber have been seen by me.**
3. **Her decaying tooth was shown by Susan.**
4. **I am told by my parents to practice my music lessons.**
5. **These pieces of furniture need to be painted.**
6. **The food is put in the refrigerator at home by people.**
7. **Good marks are always gotten by him at school.**
8. **Teeth and mouths must be kept clean by them.**
9. **Nam was told by our form teacher to put the tools back in the workshop.**
10. **An English speaking club will be opened by my school.**

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