Here are the completed sentences:

1. Ms. Jenifer worked for this company some years **ago**.
2. He was watching the television ten minutes **ago**.
3. John read four books **last** week.
4. My brother had a few driving lessons several months **ago**.
5. Nick and Veronica were friends a long time **ago**.
6. I wasn’t to Nha Trang **last** summer.
7. Cindy just left here **last** September.
8. I missed my family so much. I didn’t go home **last** February.
9. Where were you? – We looked for you **last** month!
10. Luigi studied English **last** January.
11. Were you at the meeting **last** week?
12. The burglar broke into our house **last** evening.