1. I haven’t talked to this man before.
=> This is the first time................................
2. How long have you used this mobile phone?
=> When did........................................
3. Mary hasn’t smoked for 3 years.
=> It is.......................
=> The last time...................
4. It is 2 weeks since we heard about John.
=> We.........................................
=> The last time..........................................
5. I have done this job for two years.
=> I started..................
6. They last cleaned their house a week ago.
=> They haven’t...................................
=> It is.................................................
=> The last................................
7. I have written this book for many years.
=> I started.......................................
8. She started to cook the meal 3 hours ago.
=> She has..............................
9. Do you have any experience of driving a car?
=> Have you....................................
10. We have built this new brigde for 2 years.
=> We started....................................
11. She began working here 2 months ago.
=> She……………………….
12. It is 1 year since I last went to their house.
=> I………………………………
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