Ответ:
1) They have been to Moscow 3 times.
2) My brother hasn’t bought a new computer.
3) Has your sister run 3 miles in the park?
4) I have broken my arm.
5) What have you done with my book?
6) He has just passed his last exam.
7) We haven’t moved to New-York.
8) Have your cousins helped you?
Объяснение: