нужна если не знаете не надо просто так писать

ответ: 1) has been learning

2) have been working

3) have known

4) has forgotten

5) have already done

6) have been watching

7) has just left

8) has been teaching

9) has been painting

10) hasn't written

11) been collecting

12) have been

13) have written

Объяснение: