B. 1. It's high time you learned to look after yourself
2. I'd rather you stayed at home this Christmas
3. I'd rather you helped your mother with housework
4. It's high time the children went to bed
5. They last saw her was five years ago
6. How long ago did he live in this city?
7. I last met them was a year ago
8. He started to work in this factory in 2001
9. They are looking forward to their holiday
10. It's two years since we last visited Hanoi
