Answer:
1 I have been living
2 Has been sitting
3 have been looking
4 you have been looking
5 you have been talking
6 Have you been waiting
7 I have been standing
8 he has been learning
9we have been living
10 you have been doing,we have been sitting
11 he has been working
12 I have been cooking
13 she has been reading
14 they have been working
15 has been burning
