Ответ:

1)You should have received a receipt

A receipt should have been sent to you.

2) She saw their plans for the house

The plans for the house have been showed to her

3) The students have been given extra lessons

Extra lessons have been given to the students.

4) She was given a book.

A book was given to her.

5) I am going to be showed the new technique.

A new technique are going to be showed to me.

6) You will be sent a fax.

A fax will be sent to you

7) He was offered a job

A job was offered to him

8) He was given a watch when he retired

A watch was given to him when he retired.