Ответ:
1. a (Is he having lunch at home now? - No, he isn't. He is eating.)
2. c (Why are you driving too fast? - I'm going to be late for work.)
3. c (Children often drink milk for breakfast)
4. a (Are you ironing my shirt, mum? - Yes, I am. Wait a minute)
5. a (It is raining heavily and we can't go out.)
6. a (Marina participates in the competition every year)
7. a/b (Listen! The birds sing/are singing beautifully.)
8. a (My grandmother is seeing the doctor next week.)
9. b (We are not fighting at the moment)
10. b (Does your father work in a factory?)
11. c (My class is visiting a museum tomorrow afternoon)
12. c (She isn't learning English at the moment)
13. b (I don't take the dog for a walk every day.)
14. a (I always to my homework after school.)
15. c (My sister is listening to music now.)
16. a (Dasha makes her bed every day.)
17. a (I cannot study. Who is making that terrible noise?)
18. b (Ann usually does her homework in the kitchen.)
19. b (Sam is smiling because he is very happy.)
20. b (My father often waters the plants.)
Объяснение: