1 He didn't go to the shop yesterday.
2 Nick was going to bed at ten o'clock yesterday.
3 I was playing computer games at five o'clock yesterday.
4 What were you doing when I rang up?
5 She was playing the piano the whole yesterday.
6 Did you do your homework yesterday?
7 Were you doing your homework from eight to ten yesterday?
8 I was doing my homework at six o'clock yesterday.
9 When I came , my little sister was sleeping yesterday.
9 When I washed the floor, I found my old toy under the sofa.