Ответ:2B

1 I was living

2 we were sleeping

3 were you doing, we were watching

4 she didn't study,she was chatting

5 most people doesn't wear,were they wearing.

b:

1 the internet stopped when I was watching a film.

2.she was walking down when she saw her friend.

3 he left his job when he studying for his exam

4 was doing some cleaning when I heard the news on the radio.

5 we felt ,were getting home.

6 I didn't visit, was working

7 I wasn't looking, I crashed

C:

when I was walking down the street I found ten pounds

2 it was raining when she left the house

3 when you called me I was cooking dinner

4 weren't working quietly when teacher came back