Exercise 1. Поставьте глаголы в скобках в нужное время (Present Perfect, Present Perfect Continuous)
1. Nina (learn) English for 2 years.
2. The birds (fly) to the South.
3. They (know) him for many years.
4. Mike (forget) to learn the poem.
5. The children (watch) cartoons for 2 hours.
2)have flown
3)have known
4)has forgotten
5)have been watching
не гарантирую,но вроде так))