Answers (Task 2):
1. executed
2. to confirm
3. to seek for
4. betrayed (originally: to betray)
5. awe
6. innocent
7. sentenced (originally: to sentence)
8. deserved (originally: to deserve)
9. demanded (originally: to demand)
10. menace
11. deny (originally: to deny)
12. trialled (originally: trial)
13. claimed (originally: to claim)
Hope this helps!