Here’s how to join the sentences using relative pronouns:

1. The television, which I dropped, never worked again.
2. The machine, which was broken, I hired.
3. The clothes, which she bought, were beautiful.
4. The wall, which they built, fell down after three weeks.
5. I didn’t really like the car, which we bought.
6. I lost the money, which I borrowed from John.
7. I wanted the painting, which you bought.
8. This is the chair which my parents gave to me.
9. We threw out the computer, which never worked properly.
10. This is the lion, which it’s been recently.

Make sure to adjust the placement of commas based on the context!