безотлагательно сделайте в британском не шарю.Choose the right tense form 1

Безотлагательно сделайте в британском не шарю.

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