Вопрос: раскройте скобки употребляя глаголы данные в скобках в present indefinite passive. 1)the postbox(to empty) every day. 2)the stamp (to postmark) at the post office. 3)the letters(to sort) into the different towns. 4)the mail(to load) into the train.
2. is postmarked
3. are sorted
4. is loaded