1. I'm sure I ... the door of my house. a) lock c) have lockedb) locked d) had locked2. The inspector suspects that the thief ... a special key for opening this safe.a) will use c) had usedb) has used d) use3. When are you going to finish this translation? - I... it by tomorrow.a) will finish c) will have finishedb) will be finishing d) would finish4. Have you heard the news? I ... my last exam yesterday.a) passed c) had passedb) have passed d) was passing5. He says that he doesn't know where he ... after graduating from university.a) work c) had workedb) will work d) would work6. When you ... older, you will understand everything.a) grow c) will growb) grows d) have grown7. As a rule the most important news ... broadcast on this channel.a) are c) isb) were d) had been8. There ... hardly any furniture in his room. He hasn't even a chair to sit on.a) is c) were 'b) are d) have been9. The rich collection of Hermitage regularly ... millions of people.a) attract c) have attractedb) attracts d) would attract10. When my mother returns home she ... at once that we have redecorated our flat.a) will see c) has seenb)sees d)saw11. He ... the car for many hours before he came to the crossroads.a) drives c) had been drivingb) was driving d) has driven12. We ... along the forest road when it started raining.a) were walking c) walkedb) had been walking d) had walked13. Sorry, I ... stay any longer, but I really must go home.a) mustn't c) cannotb) couldn't d) may not14. This is ... problem I've ever had in my life.a) difficult c) most difficultb) more difficult d) the most difficult15. When ... "Titanic" was crossing the Atlantic she struck an iceberg.a) - c) theb) a d) an​