5 the english grammar has been explained by our teacher
6 the accident in this city was caused by some drunk drivers
7 tom's parents will be visited by him next month
8 the secretary wasnt phoned by the manager this morning
9 was this beautiful dress bought by mary
10 these old pictures wont be hung in the living room
11 this factory was built by the german during the second world war
12 this house and these cars are going to be painted by the greens for christmas day
13 the cats had been fed before ann went to the cinema
14 the pollution problems have been discussed by the students since last week
15 has the most valuable painting in the national museum been stolen by the thieves