1.had been living
2.had been waiting
3.had left
4.had called
5.had been studying
6.had believed
7.hadn't seen
8.had been looking
9.had been thinking
10.had come
1.had been living
2.had been waiting
3.had left
4.had called
5.had been studying
6.had believed
7.hadn't seen
8.had been looking
9.had been thinking
10.had come