Wherever Harry (find) a job, there was someone who (know) that he (be) to prison.
It was only much later I (find) out that during all the time I (write to my penfriend, my sister (open) and reading the replies.
I (not understand) what (go on) . Several people (shout) at me, and one (wave) a newspaper in front of my face.
I (know) I (do) well in my exams even before I (receive) the official results.
1 found - knew - had been
2 found - opened
3 didn't understand - was going on - shouted - waved
4 knew - had done - received