1. 5. Son Doong is famous **for** the largest cave in the world.
2. 6. He joined the boys **in** herding the buffaloes.
3. 7. Would you like to visit the countryside **during** harvest time?
4. 8. I think it's better for children to grow **up** in the countryside.
5. 9. The computer provides access **to** all the information.
6. 10. A ten can be put **on**, then taken **off** and transported.
7. 11. My father used to live **on** a farm when he was younger.
8. 2. Last summer holiday I went **on** a trip **to** the countryside.