1. when we came to the station the train (to go) already. 2. they (to complete) the project before the deadline. 3. i (to work) for the same company for twelve years. 4. don't buy the tickets. i (to buy) them. 5. so far we (to pass) 3 exams. 6. won't be able to talk to you in 15 minutes because (to write) a quiz. 7. by the end of this month we (to live) together for six years. 8. i was very tired when i got home. i (to work) hard all day. 9. the numbers of regular customers (to increase) steadily. 10. am going to have a nice time as soon as i (to pass) all the exams.