Question I:
1. My father has worked in this factory for a week.
2. He has lived in Ho Chi Minh City since he was 8.
3. He has learnt English since he was 18.
4. They began working in that factory five years ago.
5. We started learning English four years ago.
6. I haven't seen her for 10 years.
7. They have checked the machine for two hours.
8. They have built the bridge for two years.
9. Nam has learnt English since 1998.
10. Khanh has played computer games since 2002.
Question VIII:
1. It is three years since the last time we went to Spain.
2. We have arrived in Budapest for two days.
3. This is the second time I've visited the Stone Forest.
4. Dung is keen on traveling.