Ответ: 1. has just been

2. have been waiting

3. Have you been writing

4. have been traveling

5. have you been

6. haven't been yet

7. haven't visited

8. have been collecting

9. have never been

10. Have you met

11.have been living

12. have made

13. have been helping

14. have been had

15.haven't started yet

16. have been thinking

Объяснение: