Ответ:
1) Helen said, "My friend is speaking on the phone"
2) The teacher said, "Dolphins are mammals"
3) The woman said, "Nick has just left the house"
4) Nelly told, "I will do the ironing later"
5) The policeman said, "You have to answer some questions"
6) John said, "The Sun is a star"
7) The waiter said, "I can call a taxi for you"
8) Jane said, "It has been snowing for three hours"