Замените действительный залог страдательным The North Sea and the English Channel separate Great Britain from the European continent. 2) Students will translate a long text at the next lesson. 3) The research workers brought many devices to their laboratory last week. 4) I have forgiven him for his unbelievable lie. 5) Julius Caesar called England Albion because of the white cliffs.

Great Britain is separated from the European continent by the North Sea and the English Channel. 
A long text will be translated by students at the next lesson. 
Many devices were brought by the research workers to their laboratory last week. (ну и примеры!!! пипец! никакой фантазии!)
 3) The research workers brought many devices to their laboratory last week. 4) he was forgiven for his unbelievable lie.  5) England was called Albion by Julius Caesar because of the white cliffs. (я шизею от этих примеров!)