1). When I came home, my little sister was sleeping.
2). When Nick came home, his brother was playing with his toys.
3) When he came home, his mother had already cooked dinner.
4) I went to the cinema yesterday.
5) I was going to the cinema, when I met you.
6) When mother came home, I was doing my homework.
7) While father was reading.Peter was playing computer.
8) when we came to my friend's house, he had just left.
9) I had been doing my homework the whole evening yesterday.
10) When her husband entered in her office, she had already finished her work for that day