2. If they had brought enough food and drinks, they wouldn't have had to spend a lot of money eating in expensive restaurants.
3. If some hadn't had food poisoning, they would have enjoyed their visit.
4. If they had had some raincoats, they wouldn't have got wet and some wouldn't have got a cold.
5. If some hadn't left their luggage on the coach when they arrived, they would have had some clothes and money with them.
6. If some had been careful when walking in Huong Pagoda, they wouldn't have got lost.
7. If some hadn't thrown waste in the forest, they wouldn't have got a fine.
8. If they hadn't stayed there only one day, they could have visited all the pagodas.