Для тех кто разбирается в английском языке. Помогите пожалуйста(((

Раскройте скобки, употребляя глаголы в требующемся времени.
1. When we (to come) to the station, our train already (to leave), and we (to have) to wait for two hours before another one (to come). 2. I was anxious to see the place where I (to spend) my child¬hood. 3. Victor asked me to explain the new rule to him, as he (to miss) the previous lesson. 4. John Gray (to visit) Russia in 1989 and (not to be) here since that time. 5. When the train (to stop), I (to look) out of the window but (not to see) any of my friends there. I (to send) them a telegram and hoped that they (to meet) me. As I (to discover) later, they (to receive) it ten minutes before the train arrived and could not meet me. 6. We were greatly surprised not to find Ann at home. It turned out that her sister (to forget) to give her our message, and Ann (to leave) the house fifteen minutes before we (to come). 7. I decided not to put on my raincoat as it (to stop) raining already and the sun (to shine) brightly. 8. The young people entered the theatre. The performance already (to begin), and they (to have) to wait till the first act (to be) over. Nina never (to be) here before and she (to like) the theatre very much. 9. I did not recognize Helen as I (not to see) her for a very long time and she greatly (to change). 10. The sight of the school building brought back the old days to us. Here we (to spend) many years together. We (to learn) to read and write; here we (to experience) our first joys and sorrows. We recollected our first day at school, how we (to come) to our first lesson looking alarmed and excited. 11. When the teacher told the boy to recite the poem, the boy (to burst) into tears: he (not to remember) anything, though he (to try) to learn his lesson so hard. 12. Jane usually works in the library. She (to work) there now. She already (to gather) the necessary material and now she (to write) her report.