18. When did you start working in that factory ?
How long________________________________________________________
19. She started to give up smoking last year.
She____________________________________________________________
20. They have learnt English for ten years .
They started _______________________________________________________
21. An and Ba have worked in that factory since 1990.
An and Ba started __________________________________________________
22. I haven’t written to you for a month.
I last____________________________________________________________
23. How long have you learned French ?
How long ago_____________________________________________________ 24. When did you start to listen to Pop music ?
How long__________________________________________________
25. The last time I ate fish was ten years ago.
I haven’t___________________________________________________
26. The last time I played football was in 1970.
I haven’t_____________________________________________________
27. The last time Lucy wore that dress was at Mary’s wedding.
Lucy hasn’t__________________________________________________