Question

Помогите, пожалуйста, с английским языком
Перевод этих предложений из Passive Voiсe в Active Voiсe

Answer 1

When I came home,the sweets had been eaten by them.
This book was written by them in the 19th century.
A number of important experiments has been made by them in this laboratory.
A new president is elected by people every four years in the USA.
He will be operated by the doctor in a week.
Streets are being cleaned from rubbish by the workers.
Very delicious food was being made by my mother when I came home.
This program can be used by me in my Internet project.
Two foreign languages:French and German are studied by our students.