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