Помогите плиз, очень нужно!
Choose the right tense form. Write down the combinations of numbers and letters with a comma (,).
Example answer: 1A, 2A, 3A, 4A, 5A
1. Nina ___________________ English for 2 years.
A. has been learning B. has learned
2. The birds __________________ to the South.
A. have already flown B. have been flying
3. They __________________ him for many years.
A. have known B. have been knowing
4. We __________________ a holiday for 5 years.
A. haven’t been having B. haven’t had
5. Mary and Sam _____________________ stamps for 3 years.
A. have collected B. have been collecting