Question

Answer 1

Giúp mình với 

Answer 2

for

for

since

for

since

since

for

since

since

for

has been-since

has worked-for

has been-for

have sent-since

hasn't eaten-for

have been-since

have lived-for

has gone-since

has lived-for

have attended-since

haven't seen-for

haven't had-for
have been-since

Answer 3

1. for

2. for

3. since

4. for

5. since

6. since

7. for

8. since

9. since

10. for 

11. has been sick - since

12. has worked - for

13. has been - for

14. have sent - since

15. hasn't eaten - for

16. have been - since

17. have lived - since

18. has gone - since

19. has lived - for

20. have attended - since

21. haven't seen - for

22. haven't had - for

23. has been - since