1. The silver medal is won by the French team.
2. The guard dogs are trained by a woman.
3. This game is played by people of all ages.
4. The match is watched by a large crowd. (Не уверена)
5. A reply is sent by the secretary.
6. The exams are marked by two different teachers.
7. That green van is followed by a police car.
(Я не уверена, sorry)