1. Sam asked who protected the animals.
2. Diana asked Kate if she would take part in the concert.
3. Ann asked his friend if he/she had met Bill the day before.
4. Kate asked David when he had been to Moscow.
5. Willy told Sam to come to see him the next day.
6. Susan asked what the capital of London was.
7. Alice told that the boys had won the game the previous week. (В исходном предложении опечатка - вместо win должно быть won, т.к. есть сигнальное слово last)