1. Choose the right tense form.
2. Timur has been learning/has learned English for 2 years.
3. The birds have already flown/have been flying to the South.
4. They have known /have been knowing him for many years.
5. Mike has forgotten/has been forgetting to learn the poem.
6. The children have been watching/have watched cartoons for 2 hours.
7. The train has just come/has been coming.
8. We haven’t been having/ haven’t had a holiday for 5 years.
9. She has been teaching/has taught at this school for twenty years.
10. Mike has been painting/has painted in his studio since 10 o’clock.
11. Mary and Sam have collected/ have been collecting stamps for 3 years.
12. Their parents have been/have being friends since their childhood.
13. Dave has been/ has been being a student for 2 years.
3 have already flown
4 have known
5 has forgotten
6 have been watching
7 has just come
8 haven’t had
9 has been teaching
10 has been painting
11. Have been collecting
12 have been
13 has been
1)has learned
2)flown
3)have known
4)has forgotten
5) have been watching
6)come
7) haven't had
8) teaching
9)has been painting
10)have been
11)have being friends
12)has been