Ответ:

1.have been cooking

2.he has been living

3.l have knownher

4.l've been shopping

5.she has been working

6.l haven't been

7.we have never attended

8.you have been packing

9.have you already read

10.Mary has been cooking

11.has he ever travelled

12.they have bought

13.they have been walking

14.how long have you been learning