Сделайте упражнение по английскому

ответ:1)has worked

2)has worked, for

3)have known, since

4)have known, for

5)has walked, for

6)has had, since

7)hasn't been, since

8)hasn't been, for

9)have had, since

10)have had, for

11)has improved

12)have had, for

13)don't work

14 )have attended, for

Объяснение:for - в течении какого-то периода, since - с какого-то времени