Past progressive or the past simple tense of the verbs in margin. 1. we to a lecture yesterday at ten o'clock. listen 2. she the piano from 11 till 12 o'clock. play 3. when he in, i my exercises. come, do 4. what you yesterday at 8 o'clock? do 5. yesterday when i the newspaper, my sister to a concert over the radio. read,listen 6. she out of the window when i her. look,

1. We were listening to a lecture yesterday at  ten o'clock.                                                         
2. She was playing the piano from 11 till 12 o'clock.                                                                
3. When he came in, I was doing my exercises.                                                            
4.  What were you doing yesterday at 8 o'clock?                                                                      
5. Yesterday when I was reading the newspaper, my sister was listening to a concert over the radio.                                                                          
6.  She was looking out of the window when I saw her.