:5. put the verbs in brackets into the past simple or the past continuous. 1. he … (sit) in a cafe, when i … (come) in. 2. my friend … (talk) to the teacher, when i … (see) him. 3. the boy … (fall) and … (hurt) himself while he … (ride) his bicycle. 4. she … (wait) for her sister when the rain … (start). 5. when the pupils … (hear) the bell, they … (get up) and … (leave). 6. while she … (play) the piano, i … (write) a letter. 7. he … (go) to the university when i … (meet) him. 8. our friends … (discuss) something when we … (interrupt) them. 9. my mother … (watch) tv when i … (come) into the room. 10. when i … (look) out of the window, i … (see) that it … (rain) hard and people … (hurry) along the street. 11. we … (leave) the house when the telephone … (ring). 12. i … (sit) on the river bank when my friends … (join) me. 13. when i … (come) up to him, he … (speak) to his friends. 14. we … (meet) her when she … (walk) home. 15. when she … (enter) the room, i … (stand) at the window. 16. i … (watch) tv when somebody … (knock) at the door. 17. she … (water) the flowers while her husband … (watch) tv. 18. when we … (enter) the room, he … (smoke and look) at the picture. 19. what … you … (do), when i … (ring) you up yesterday? 20. as he … (cross) the street, he … (slip and fall).