1) I was doing my homework at 2 o’clock yesterday.
2) We were watching TV from 3pm till 9pm last Sunday.
3) You were sleeping at 9 o’clock yesterday.
4) He wasn’t doing his home work when I came home.
5) They were eating at 5 o’clock yesterday.
6) My elder brother was playing computer games at 4 o’clock yesterday.
7) She was doing her project all evening yesterday.
8) While she was cooking dinner he was playing computer games the whole evening on Saturday.
9) I was reading newspapers when my friend rang me up and invited to go for a walk.
Объяснение:
1) Could
2) Use
3) Could not
4) Could not
5) Was not