Fill in the blanks using the following expressions.
1. vigilant

2. contents
3. spotted
4. retaliate
5. detachment

1. She felt a sense of _____ from what was going on.
2. They threatened to _____ against the British.
3. Fire has caused severe damage to the _____ of the building.
4. The thief was _____ by vigilant neighbours.
5. A pilot must remain _____ at all times.

Answer key
1. detachment
2. retaliate
3. contents
4. spotted
5. vigilant