Тут все предложения в прямой речи. Вам их нужно перевести в косвенную речь

1 The museum guide said us that we are not allowed to take pictures

2 Brian said that Shella would return from Moscow next week

3 The treveler agent told me that I could collect my passport tomorrow

4 Sara said that she was trying to decide where to go on holiday

5 Ted said that he had spent last summer travelling through Africa

6 the boy told his friends that (that) had been his best holiday ever

7 Sue and Jack told me that thay had not taken many photos during their trip

8 Mary said to her husband that he had to call the hotel to confirm their reservation

9 they said that we were meeting some friends at the airport later today

Объяснение: перевод в соответствии с правилами. в 6 скобки, так как семантически "that" разнозначно, 1-союз, 2-местоимение. Одно "that" можно брать. вообще косвенная речь допускается без союза.

это ссылка на правила: https://www.bkc.ru/blog/about-language/grammar/kosvennaya-rech-v-angliyskom-yazyke/