Here are some answers from the students:

Which of these answers are good answers? Certainly not all of them.

1. dissatisfaction , irritation, disaffection, discontent, discontentment
2. understand, imagine, realise, apprehend, comprehend
3. interview, talk, chat, conversation, meeting
4. employee, staff, personnel, clerks
5. situation, condition, state
6. (an) exception, rarity, rare occurrence
7. notices, papers, declaration
8. limit
9. agreement, approval
10. appointment
11. view, arguments,
12. apology
13. encountering, experiencing, facing, undergoing