Что обозначает красный цвет на флаге России? 2-4 предложения. На английском​

1 They said that they were meeting Tom that day.
2 She told her son that he must(had to )call the office to check it.
3 They told me that they hadn`t taken photos during their trip.
4 The boy told his friends  that had been his best chance ever.
5 She said that she had spent previous summer travelling.
6 He told me that I could collect my  books the next day.
7 He said that Mary would return from Paris the next week.
8 The policeman saidthat you were not allowed to park there.
9 She said that she was reading to find more information.
10 The man wondered how old he Sphinx was.
11 She told me to call her from my office when I arrived.
12 Kate told Mike not to forget to take his umbrella.
13 John wondered what time they were leaving the following day.
14  Nick told Jane to send him a letter.
15 He apologised and wondered  what time the next bus left.