1. was waiting, called, couldn't come, broke down
2. beat, was winning, scored
3. arrived, has fininshed, were sitting
4. was running, has already left, was, were waiting
5. started, was walking, stopped, didn't wear, didn't have
6. were driving, remembered, didn't turn off
7. didn't recognize, has changed
8. has already started, turned on, was losing, were playing