Viết lại câu sao cho nghĩa không đổi:

1. She hasn't written to her parents for two years .
It is ......
2. They started to learn English five years ago .
They have .......
3. I have not met her since 2015.
The last time .....
4. This is the first time my father visited Ha Long .
My father has never .....
5. It is ten years since We ate this food .
We haven't .....
6. Hao has collected stamps for six years 
Hao started ......
7. The last time we visited Hue was two three years ago.
Hao started ......
8. My father started giving up smoking a year ago .
My father has .............
9. Mai began playing the piano in 2000.
Mai has ......