11.Have they just painted those posters
Those posters have just been painted
12.Noone took Alice to the comenercial district.
the comenercial district wasn't taken 
13. They didn'tinvite alice to the cantren for lunch
alice hadn't invited to the cantren for lunch
14. The naughty pupiles laughed at the newcomers.
the newcomers was laughed by The naughty pupiles
15.Nobody has opened this box for along time
his box hasn't been opened for along time
16.Did they paint the windows yesterday?
were the windows painted yesterday?
17.Does your child eat that cake?
s that cake was eaten  by your child ?
18. Noone has used this house for 3 years.
this house hasn't been used for 3 years