Here are the sentences rewritten in passive form:

1. Isn’t a better hotel able to be found by you?

2. That man hasn’t been seen here by me before.

3. Old car tires are recycled to make shoes and sandals.

4. The coffee is too hot to be drunk by me.

5. His car was repaired by somebody yesterday.

6. It was thought that the painting had been destroyed.

7. Our house is going to be rebuilt by a local firm.

8. The tickets cannot be bought by me; they are too expensive.