1 cooked 2 was cooking 3 was cooking 4 read 5 was not reading 6 wasn't reading 7 passed 8 was passing 9 what was he doing...10 what was he doing... 11 worked 12 was working 13 where was Pete working... 14 washed 15 was washing 16 what was your sister washing... 17why wasn't your child sleeping... 18 played 19 were playing 20 didn't discuss