помогите мне пожалуйста с английским!!очень нужно!поставить предложения в Passive voice!!

1.The senior students laughed at the freshman. - The freshman was laughed at (by the senior students).
2.The group spoke to the headmistress yesterday. - The headmistress was spoken to (by the group) yesterday.
3.The young mothers looked after their babies with great care. - The babies were looked after with great care (by their mothers).
4.Nobody lived in that old house. - That old house wasn't lived in.
5.They sent for Jim and told him to prepare a report on that subject. - Jim was sent for and told to prepare a report on that subject.
6.We thought about our friend all the time. - Our friends were thought about all the time.
7.The doctor will operate on him in a week. - He will be operated on (by the doctor) in a week.
8.The teacher sent for the pupil`s parents. - The pupil's parents were sent for (by the teacher.)
9.They looked for the newspaper everywhere. - The newspaper was looked for everywhere.
10.Nobody slept in the bed. - The bed wasn't slept in.
11.The neighbour asked for the telegram. - The telegram was asked for by the neighbour.
12.Everybody listened to the lecturer with great attention. - The lecturer was listened to with great attention (by everybody.)

the freshman was laughed by the senior
the headmistress was spoken yesterday
the babies are looked after by the young mothers with great care
the old house was lifeless
jim was sent after and was told to prepare a report on that subject
our friend was thought about all the time
he will be operated in a week
the pupil's parents were sent after
the newspaper was looked for everywhere
th------
the telegram was asked by the neighbour
the lecteur was listened with great attention