Переделать в страдательный залог 1)children are writing test. 2)Postmen deliver letters everyday. 3)A lot of children

1) Children are writing test. — The test is being written by children. 2) Postmen deliver letters everyday. — Letters are delivered by postman every day. 3) A lot of children play volleyball. — Volleyball is played by a lot of children every day. 4) We visited our friends yesterday. — Our friends were visited by us yesterday. 5) Children have received gifts. — Gifts have been received by children. 6) My grandma has cooked a cake. — The cake has been cooked by my grandma. 7) Lord Brown will buy a new car. — A new car will be bought by Lord Brown.