Sure! Here are the answers for each of the questions from the provided text:

**Part 1:**
1. **A** (in)
2. **B** (will finish)
3. **A** (was cycling)
4. **A** (was built)
5. **C** (However)
6. **B** (to use)
7. **D** (haven't seen)
8. **C** (disasters)
9. **C** (fluency)
10. **A** (The)
11. **B** (No)
12. **A** (more peaceful)
13. **A** (were)
14. **B** (had)
15. **A** (most)

**Part 2:**
16. **A** (celebrated)
17. **D** (traditional)
18. **C** (for)
19. **B** (before)

Let me know if you need more help!