Ответ:

1.They hadn't a very good holiday

2.He didnt went on holiday with his friends

3.We didn't got home very late

4.She didn't knew a lot about castle

5.I didn't saw a lot of interesting things in museum

6.It didn't took a long time to get the beach.

Простите пожалуйста если вышло не правильно. Я старалась.