Упражнение 1
1)was writing
2)was going,met
3)was driving
4)were sitting
5)was studying
Упражнение 2
1)were playing,was knitting,was cleaning,were reading
2)was walking,saw,was waiting,was sitting
3)was riding,was shining,were singing
Упражнение 3
1)was walking,began
2)were you reading
3)was digging,hurt
4)was waiting
5)was she driving,happened
6)were having
7)were playing
Упражнение 4
1)Kim was crossing the street when he saw Jane
2)I was serving the table when she dropped a glass