Active and passive voice

Front

This problem.....by your brother yesterday.

Back

was solved

Front

My father wrote this book. It.......by my father.

Back

was written

Front

This house...............in 1970 by my grandfather.

Back

was built

Front

Students must submit reports by week's end.

Back

are asked

Front

Cartoons by kids every evening.

Back

are watched

Front

Dinner at 8 o'clock by my mother.

Back

is served

Front

Stamps collected by my dad as a boy.

Back

were collected

Front

A lot of money............last night.

Back

was robbed

Front

I.....by car to school every day.

Back

am driven

Front

My mother baked chocolate chip cookies for our family.

Back

active