1 was 2 are 3 is 4 am 5 will be 6 were 7 is 8 was 9 were 10 has been 11 has already been 12 was 13 was 14 are 15 will be
1 the walls haven't been painted yet.
2 pictures and posters still haven't been hung in the living room
3the origin of universe won't be explained very soon by scientists.
4 that exhibition won't be opened in June
5the bridge hadn't been built by May
6 the windows aren't washed every month
7the world championship wasn't held by them last year
8this church wasn't been restoring by them at that time
