EX 1
1)was sleeping
2)came
3)were you doing
4)stole
5)talked
6)came
7)did you have
8)Did you have
9)were having
10)bought
EX 2
1.When I was doing the washing-up, I broke a plate.
2.While Tom was playing the piano, his mother was doing the washing-up.
4.I was having dinner when I suddenly heard a loud bang.
5.My father was working in the garden, when an old friend passed by to see him.
