1. Put the verbs in brackets in the right form.
Robbert ( scan) the book , when we entered the room.
Who (invent) the telephone?
Boys already ( email) the virus to his computer.
Mark (translste) the story before he (give) the book to kidnapper.

Robbert was scanning the book , when we entered the roomWho invented the telephone?Boys have already emailed the virus to his computer.Mark had translated the story before he gave the book to kidnapper.