PAST PERFECT CONTINUOUS:
1. They had been talking .
2. She had been working.
3. How long had you been waiting ?
4. He had been standing all day at work .
5.James had been teaching
6. I had not been studying .
7. He had been jogging
8. She had not been attending .
9. He was exercising .
10 . He had been eating an apple .
PAST PERFECT SIMPLE
1. I had never seen
2. I had lost my lucky pen.
3. He had visited my country .
4. She had read the book .
5. You had studied English .
6. She had visited her Japaneste uncle .
7. She had never seen a bear .
8. He had reapir his car .
9 . Many cars had been repaired by him .
10 . She had eat an apple .
