Английский, 8 номер

1. has been living , for
2 has been teaching, since
3 has been working, since
4 have been playing, since
5 have been studying, for
6 haven't seen, for
7 haven't heard, since
8 have been knowing, since
9 has been, since
10 has been working, since
11 have been having, since
12 haven't seen, for
13 haven't spoken, since 
14 has been playing, for