=>
VI/
1. I have written this letter for two hours.
2. My father hasn't drunk wine since last year.
3. She hasn't gone out with him for three weeks.
4. He hasn't seen Mrs.Green for two years.
5. It is over six months since John last had his hair cut.
6. We last saw Mary when we left university.
7. The last time my father smoked cigarettes was a month ago.
8. It is ten years since we last went to the beach.
9.How long is it since you began to learn English?
VII/
1. He used to live in Hanoi when he was young.
2. He used to be late for class.
3. Huynh Duc used to be a football player.
4. There used to be a lot of beautiful villas in our city.
5. Some years back young people did not use to / wouldn’t pay as much attention to traditional festivals as they do nowadays.
