Odpowiedź:
1.The cat wasn't bitten by our dog
2.The car is repaired by the mechanic
3.Spanish is understood by them
4.The fire alarm is tested by the electricians
5.New car is bought by my friend
6.Bathroom was cleaned by John
7.The blue jeans were invented by Levi Strauss
8.A new kind of washing powder was developed by them
9. The mountains were covered in snow
10.The keys were given me by the lady
11.The reports were handed in by the students
12.The rucksack is put on the floor by Sue
13.The children are helped by the policeman
14.The flowers are watered by mother
15.The song is sung very well by them
