Based on the text provided:

**17. What does Mark love about Glasgow's culture?**
- The correct answer is **A. Friendly people.** (Mark mentions that people greet each other on the street.)

**18. As a result of his experience, Mark**
- The correct answer is **C. promises to go to a university in Glasgow.** (While he expresses love for the city, the closest match to his feelings about education is his promise to attend university there.)