Dưới đây là các điền từ thích hợp vào chỗ trống:

1. My best friend started working there 5 years **ago**.
2. We haven't talked to each other **since** we argued that day.
3. They have used that fridge **for** many years.
4. It has been a long time **since** we last met.
5. Maria started her business a few months **ago**.
6. I haven't cooked for the family **for** nearly 3 weeks.