I
1. had already prepared //came
2. had already made // got up
3. started // had left
4. realized // had forgotten
5. bought / had sang
II
1. was going //met
2. were going // met
3. were not doing // came
4. saw // were playing
5. didn't find // was washing
III
1. had eaten
2. had been reparing
3. had started
4. had been painting
5. had forgotten
6. had been building