Fill in the blanks using the following expressions.
1. unhappy
2. emotive
3. cornerstone
4. voluntary
5. abstinence

1. My faith teaches me that _____ is a virtue.
2. Attendance on the course is purely _____.
3. I didn't realize but he was deeply _____ at that time.
4. Trust is the _____ of their relationship.
5. Capital punishment is a highly _____ issue.

Answer key
1. abstinence
2. voluntary
3. unhappy
4. cornerstone
5. emotive