Rewrite the sentence without changing its meaning

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Ex 8- Rewrite the sentence without changing its meaning.
1. We began listening to music at 4pm
→ We have...
2. I left there last month
-
I haven't
3. When did you live here?
→ How long
4. When did you know her?
→How long
5. How long have you written this book?
When......
-
6. Ba has worked in this factory since he was 18
Ba started...........
7. It is the first time Tom has sung
-> Tom has..........
8. Ba has never listened to classical music before
→This is....
9. Nam has never seen her before
→ It is...........
10. I have never talked to him before
It is...............
11. It is the first time Ba has killed chickens
-> Ba has.........
12. It is the first time she has eaten apples
→She has...........
13. I haven't seen you for three years
→It is.............
→The last..
-
I last.........
14. I haven't watched T.V for a month
→It is..............
→ The last..
→ I last..
15. It is a week since I last played soccer
→ I last.........
The last....
I haven't......