They bought this house ten years ago.→ They have
1. They bought this house ten years ago.
→ They have.........
2. Jane gave me a present on my last birthday.
→ I was.....
3. I last saw Bob when I was in Ho Chi Minh City.
→ I haven't seen.....
4. It is a three-hour drive from Hanoi to Nam Dinh. → It takes.........
5. The children couldn't go swimming because the sea was very rough.
→ The sea was too......
6. All the students love the principal because he is very kind.
→ Owing to