Choose the right tense form.
1. Ann has been paiting / has painted in his studio since 8 o'clock.
2. We have been watching / have watched TV for 3 hours.
3. Alex has been learning / has learned French for years.
4. The train has just some / has been coming.
5. Mary has been / has been being a student for 2 years.

1. Ann has been painting in his studio since 8 o'clock.

2. We have been watching TV for 3 hours.

3. Alex has been learning French for years.

4. The train has just come.

5. Mary has been a student for 2 years.