Ответ:

Personal:

The cake was baked by my sister.

The letter was written by me.

The car was repaired by the mechanic.

The book was read by John.

The painting was drawn by the artist.

The movie was directed by Steven Spielberg.

The meal was cooked by the chef.

The song was sung by Beyoncé.

The house was built by the contractor.

The speech was delivered by the president.

Impersonal:

It is said that he will arrive tomorrow.

The results of the experiment were announced by the researcher.

The mistake was made by someone in the team.

The package was left on the porch.

The concert was cancelled due to bad weather.

The decision was made by the committee.

The message was conveyed to the manager.

The question was answered by the teacher.

The report was submitted on time.

The appointment was scheduled for next week.