Английский язык помогите пж

Open the brackets. Use Past Simple or Past Continuous.

1. When I (to come) into the hall, the students (to discuss) the first report. 2. The secretary (to type) a report when the postman (to come in) and (to put) the latest mail on the table. 3. When I (to leave) the university, it (to rain) heavily. 4. When John (to return) home, he (to see) his younger brother who (to do) his lessons. 5. What you (to do) when I (to come in)? 6. I (to write) a letter to my friend, and now I (to take) it the letter-box. 7. Last year at the same hour of the day our family (to sit) in our grandfather's room. Father (to read) an article about my grandfather's new invention. 8. When I (to come) home from school, my little brother (to sit) on the floor with all his toys around him. He (to play) with them. I (to tell) him the put all his toys in the box as he (to make) too much noise. 9. All night long the stars (to glitter). 10. She (to look up) to see if we (to listen). 11. For the first time she (to notice) her sister (to wear) a new dress. 12. It so (to happen) that she (to have dinner) that very evening at her aunt's. 13. Ann (to come) to the sitting-room where we all (to sit) reading the papers after breakfast. 14. Near her a small boy (to play) silently. 15. She (to go) to the back door, and as she (to raise) her hand to knock, the young man (to open) the door suddenly. 16. When the woman (to enter) the room, the children (to feed) the goldfish. 17. When I (to visit) my friends in Denmark, I (to buy) two presents for my family. 18. Yesterday at one o’ clock I (to have) lunch at the canteen. 19. When he (to come) in, I (to do) my exercises. 20. What you (to do) at eight o’ clock yesterday? 21. He (to read) on the sofa when I (to come) in and (to sit) down beside him. 22. I (to walk) along the street with my friend when a tram (to pass). 23. She (to look) out of the window when I (to see) her. 24. We (to answer) the teacher’s questions when the headmistress (to enter) the classroom. 25. He (to walk) along the river when a boat (to pass). 26. The old man (to think) about his plan when he (to fall) asleep. 27. When I (to enter) the classroom, the teacher (to write) words on the blackboard and the pupils (to copy) them into their exercise books. 28. Mother (to cook) dinner at three o’clock yesterday. 29. When they (to sail) down the river, they (to see) a little island. 30. When I (to read) the newspaper yesterday, I (to find) an interesting article on UFOs. 31. You (to watch) TV yesterday? — Yes, we (to watch) TV the whole evening yesterday.