Answer: To quit teaching. (For most teachers)
Explanation: Or if they like teaching, then to move to a high-class school to teach where the staff and co-workers are friendly, and where the pay is good.
For the second question (B) parentheses, so
1. Watched
2. Finished
3. Fixed
4. Visited
5. Washed
6. Tried
7. Guided
8. Offered
9. Waited
10. Divided
If that’s makes sense! pretty simple :)