Помогите пожалуйста выполнить задание. Все!!!!даю очень баллы!

1 when i went into the room he was writing an exercise. 2 when i left home it was raining. 3 what was he doing when you came to him? 4 he injured his leg while he was playing football. 5 when i was coming here i saw your brother. 6 it was evening. my wife was reading a book, and i was writing a letter. suddenly the door opened and there was my brother. 7 it was 10 oclock in the morning, when i entered the  office.some of customs were waiting for a director. secretary was speaking with somebody by phone. 8 i was having my lunch when he called me. 9 i was going home late. it was getting  dark and it was raining. i was going fast because i didnt have an umbrella and i was afraid of becoming  wet. 10 children were playing chess and mother was cooking lunch in that time. 11 where were you hurrying when i meet you? 12 the fire started in the night when everybody were sleeping. 13 she was looking at him while he was making tea. 14 when he entered i was  reviewing his earlier works