СРОЧНО!!!!
Open the brackets using Past Simple and Past Continuous.

Ответ:

1)Who was waiting for you when I arrived?

2)Mr. Brown was having a shower when I knocked on his door.

3)He was reading a newspaper when I came in.

4)He was leaving the bank when the thieves took his money.

5)When I came to the theatre ,myfriend was waiting for me.

6)I was walking the dog when I saw my friend.