Question

Где тут пассивный залог? 
1) That milk was bought 3 days ago
2) They were discussing the project when I came in
3) The letter will be sent
4) Cows give us milk
5) We have already visited her

Answer 1

по-моему 1 предложение

Answer 2

Пассивный залог в 1ом и 3ем