1. Hairdressers do people's hair
2. An electrician has to be careful
3. We don't have to have dinner at 7:30 p.m.
4. Can you ask his brother?
5. Do Mark have to be on time for work?
6. Ann looks after sick animals. She is a vet
7. His voice is (double/similar) to Beckham's too.
8. His voice is similar to Beckham's too.