2. She has been travelling for 3 months.
She has visited 6 countries so far.
3. He has won the national the national championship 4 times.
He has been playing tennis since he was 10.
4. They have been making films since they left college.
They have made 5 films since they left college.
Объяснение:
В Pr. Perfect Tense действия уже произошли, и там есть результат, а в Pr. Perfect Continious Tense действия продолжаются.
