Перевод в косвенную речь :)

15 Eric said, "They had been talking on the phone for an hour before I Interrupted them." - Eric said that they had been talking on the phone for an hour before he had Interrupted them.
16 "I haven't spoken to Mary since last week," Gloria said. - Gloria said that she hadn't spoken to Mary since the the previous week.
17 "They delivered the letters this morning," she said. - She said that they had delivered the letters that morning.
18 He said, "I'd like to buy this jumper." - He said that he would like to buy that jumper.
19 "They aren't going on holiday this year," he said. - He said that they weren't going on holiday that year.
20 Jane said, "I haven't finished my homework yet." - Jane said that she hadn't finished her homework yet.
21 "I'm going to bed early tonight," Caroline said. - Caroline said that she was going to bed early that night (that evening).
22 "My mother is coming to visit us," I said. - I said that my mother was coming to visit us.
23 "We don't want to watch a film tonight," the children said. - The children said that they didn't want to watch a film that night\that evening.
24 "He's playing in the garden now," his mother said. - His mother said that he was playing in the garden then\at that moment.
25 She said, "You must do your homework now." - She said that I must do\had to do my homework then\at that moment.

PS Не забываем про своё обещание!: -)