Переделайте в пассивный залог, /Convert it into a passive voice

The bird is watched by the cat.

The problem was solved by my classmates yesterday.

The car is being repaired by my dad at the moment.

A new camera was bought (by me) last Friday.

Our daughter is sent to rest in south (by us) every year.

Have the rules of the game been explained (by you)?

This book was written (by the writer) in the 19th century.

Something was sent for the pupil's parents by the head teacher.

My cat is groomed (by me) every day.

Кусочки, взятые в скобки (), можно опустить по своему усмотрению.