Exercise 5. Choose the most suitable verb form for the sentences.

1. I was walking down the street yesterday. I passed the supermarket and suddenly remembered I (to forget) my keys.

2. While I ((to watch) the film, there was a power-cut (отключение электроэнергии).

3. By the time we ran back to the flat to close the window, the bird (to disappear).

4. Who (to drive) the bus at the time of the accident?

5. She was so angry that she missed the party, the only reason she didn't go because no-one (to tell) about it.

6. My girlfriend (to be)to the restaurant before, so she knew exactly what to order.

7) I forgot to tell you, yesterday while I (to walk) , I saw that American man you like.

8. What you (to do) when I walked into your room yesterday?

Exercise 6. Please choose whether the underlined verb form is suitable (s) or unsuitable (u)

8. While we had dinner, the plumber (водопроводчик) knocked on the door.

9. We didn't go to this restaurant before.

10. Apart from the delays at the airport, they were enjoying their holiday last year.

11. I didn't know you had bought a new house.

12. What _did you wear_ to the wedding last week?

13. When I woke up in the morning I remembered exactly what _happened_.

14. 'What a disaster of a week !' the woman thought. Everything _had gone_ wrong!

15. We all wanted to believe her but we suspected she was lying.

16. Were you walking_ to work everyday when you lived in Spain?

17. We tried to cook yorkshire puddings, but we didn't really know what we were doing.

Exercise 7. Open the brackets using the necessary forms of the infinitives

1.Last night we (to go) to a football match. 2.We (to take) a bus. 3. The bus (to be) full of people as many (to want) to see the match. 4. We (to get off) the bus and (to go) in the direction of the stadium. 5. While we (to cross) the road, I saw Victor. 6. He (to stand) at the corner. 7. He said he (to wait) for his friend for about 20 minutes. 8. He also said that his friend (to come) to St.Petersburg the day before and (to want) to see the new stadium. 9. While we (to talk) a man (to come up) to me and (to ask) for a spare ticket. 10. We (to enter) the stadium just as the football players (to come out) on to the field. 11. At the entrance of the stadium we (to meet) Sergei. 12. He (to show) us to our seats and we (to agree) to meet in the refreshment –room during the interval. 13. He (to ask) me if I (to play) football in my childhood.

Exercise 8. Put the Infinitives into the Past Perfect

1. Before we arrived at school the classes (start) .

2. I felt exhausted because I (run) ten miles.

3. He (study) that book before he arrived in Pakistan.

4. He (sell) all the copies of the thesaurus before we got there.

5. We went to his place for dinner but to our great surprise he (have) his dinner.

6. When I got up , rather late, the sun (rise).

7. Before we got there they (begin) the show.

8. He (finish) his work before I began mine.

9. It (begin) to rain when I stepped out of the house.

10. Soon after they (complete) their homework they ran out to play with the dog.