1) While the secretary was printing documents, I talked to the chief engineer.
2) What did you do on Monday from eight to ten in the evening? Answer: I was preparing for the exam.
3) You were busy yesterday, right?
Yes, I wrote an article.
4) Last night we were at home. I read the book all evening. My wife was watching TV, and the children were playing chess.
5) Who helped you translate the article?
I translated it myself!
6) Who signed the documents? You yourself signed them.