Сhoose Present Continuous or Present Simple, write only the verb form. Don't use punctuation marks.

1. Past Simple
+She left home at nine o'clock.
-She didn't leave home at nine o'clock.
?Did she leave home at nine o'clock?
Present Simple
+She leaves home at nine o'clock.
-She doesn't leave home at nine o'clock.
?Does she leave home at nine o'clock?
Future Simple
+She will leave home at nine o'clock.
-She won't leave home at nine o'clock.
?Will she leave home at nine o'clock?

2.Past Simple
+Children helped their mother about the horse.
-Children didn't help their mother about the horse.
?Did children help their mother about the horse?
Present Simple
+Children help their mother about the horse.
-Children don't help their mother about the horse.
?Do children help their mother about the horse?
Future Simple
+Children will help their mother about the horse.
-Children won't help their mother about the horse.
?Will children help their mother about the horse?

1. When did you enter the university?
2. It is not our problem. It is yours.
3. Do not distract him! He is writing an important letter.
4. He is composing a song. The song is about love.
5. Who knows German best of all here?
6. When she saw blood she got frightened.
7. We have four pets: a cat and three dogs.
8. The contracts have already been checked and analyzed.
9. How is your friend? He is well, thanks.
10. Does she have to wake up early to reach the university in time?
11. The essay was written by the son.
12. In this café tea is usually served without sugar.
13. Does he expect us to do that without any support?
14. A man appeared from the door and looked at us.
15. Where are Tom's things?
16. We live in a big cottage.
17. Turn off the water!
18. M. Jackson sang many hits.
19. What are the constituent parts of the Russian Federation?
20. When we entered our brothers were playing.
21. If I see him I will ask on this matter.
22. We thought the book would be more interesting.
23. All teenagers enjoy computer games.
24. Do I have to wake up so early?
25. I could read all night long if the book was interesting.