Question

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.

Answer 1

1. had gone
2. had completed
3. have been working
4. have bought
5. have passed
6. I'm writing
7. will have been living
8. had been working
9. have been increasing
10. pass

Answer 2

1. When we came to the station, the train had already gone.
2. They had completed the project before the deadline.
3. I have been working for the same company for twelve years.
4. Don't buy the tickets. I will buy them.
5. So far we have passed 3 exams.
6. I won't be able to talk to you in 15 minutes because I am writing a quiz.
7. By the end of this month, we will have been living together for six years.
8. I was very tired when I got home. I had worked hard all day.
9. The numbers of regular customers have been increasing steadily.
10. I am going to have a nice time as soon as I pass all the exams.