10. There was a natural mark which indicated the start of the river Thames.
11. During the marathon the weather was fine.
12. After the accident with Martin’s leg, Tom carried his rucksack.
3) Not stated
13. The friends spent all their nights in the tent.
14. There were a lot of tourists near the statue of Old Father Thames.
3) Not Stated
15. Near London the Thames was closed to navigation.
16. Their marathon route went through London.