Open brackets using Present, Past, Future Simple, Present, Past Continuous or Present, Past Perfect.
10. He (to come) home a minute ago. 11. Oh, close the window! Look, all my papers (to fall) on the floor because of the wind. 12. By eight o'clock yesterday I (to do) my homework and at eight I (to play) the piano. 13. When I (to ring) up Mike, he still (to learn) the poem which he (to begin) learning at school. 12. When I (to look) out of the window, the children (to play) with a ball which Pete (to bring) from home. 13. By ten o'clock the children (to settle) comfortably on the sofa and at ten they (to watch) a film on TV. 14. Suddenly he (to remember) that he (not to ring) her up in the morning. 15. When my uncle (to leave), he (to hurry) to the station to book a ticket. 16. Once a week, usually on Sunday mornings, she (to go) swimming. A few friends usually (to go) along, too. 17. I want to get a medical checkup. I (to go) to my doctor tomorrow. 18. I (to stay) at home till she (to come). Then we (to go) to the theatre if she (to bring) tickets. 19. He (not to spend) last summer in the country. 20. He (to study) French before he (to enter) the university.