ex. Use the right form: Present Perfect или Past Simple.
1. The sun (not to rise) yet, but the sky in the east is getting lighter every minute. 3. I (not to read) the newspaper today. 5. How many times you (to be) to St. Petersburg? 7. We (to go) to the country yesterday, but the rain ( to spoil) all the pleasure. 9. The lecture (not yet to begin) and the students are talking in the classroom. 11. She ( to leave) the room a moment ago. 13. When it all ( to happen)? 15. Show me the dress which you (to make). 17. Oh, close the window! Look, all my papers (to fall) on the floor because of the wind.