7. I am eating my breakfast at the moment.
8.We were afraid to swim in the polluted river.
9. They often go camping at the weekend.
10. Do you play volleyball well?
11. He usually goes to bed at 10 p.m.
12. She has already walked her dog.
13. There are many big cities in Russia.
14. A lion is smaller than an elephant.
15. Did they arrive home early last night?
16. He is the worst pupil in class.
17. I don’t need apples to make borshch.
18. Students mustn't be late for the lesson
19. The weather was cold last week.
20. Mice are under the table.