A
1 had gone
2 knew
3 was
4 had been
5 needed
6 were having
B
1 would
2 might
3 could(were able to)
4 should
5 could (was able to)
6 would(should)
7 might
8 would
C
1 my mother had joined
2 her trip to Turkey had
3 how they would find
4 why Rob had been
5 who had seen me
6 who I had seen