BT dạng viết lại câu cho nghĩa không đổi:
1. This last time she came back to her hometown was 4 years ago.
=> She hasn't.........................................................................................
2. He started working as a bank clerk 3 months ago.
=> He has............................................................................................
3. It has been 5 years since we first flew to Singapore.
=> We have....................................................................................
4. I last had my hair cut in November.
=> I haven't.......................................................................................
5. The last time we called each other was 5 months ago.
=> We haven't.....................................................................................
6. It is a long time since we last met.
=> We haven't........................................................................................
7. When did you have it?
=> How long..........................................................................................?
8. This is the first time I had such a delicious meal.
=> I haven't................................................................................
9. I haven't seen him for 8 days.
=> The last...................................................................................
10. To day is Saturday. I haven't taken a bath since Wednesday.
=> It is.........................................................................................