18. complete using past simple or present perfect.
1.1 (read) this book. i _ (read) it in 1998 when it_
lished
(be) first pub-
2. it (not/rain) today and it (not/rain) yesterday.
3. when (phone) her last?
4. how long _(have) this car?
5. how long ago (buy) it?
(ever, travel) by plane? - yes, i (travel) to st. petersburg a year ago.
7. he (get up, just).
8. he (get up) very early in the morning.
9. she (not/pass) her exam. she is very upset.
10. (find) your dictionary? - oh yes. - where you (find) it? - it
(be) under my bed.

1. I am glad (to be introduced) to you. 2. The box was (to  be handled) with care. You should (ask) someone (to help) you. This might not (have happened). 3. Her mood seems (to have changed) for the worse. We had better not (speak) to her now. 4. I am sorry (to have disappointed) you but I did not mean anything of the kind. 5. He is happy (to have been awarded) the first Landscape Prize for his picture. 6. He was anxious (to take) the first place in the figure-skating competition. 7. The poem can easily (be memorized). 8. This poem is easy (to memorize). 9. I did not expect (to be asked) this question. 10. There were so many things (to do), so many experiments (to try). 11. The teacher expected him (to give) a better answer at the examination. 12. They are supposed (to have benn experimenting) in this field for about a year and are believed (to have achieved) good results. 13. He must (have read) something funny; he is smiling all the time

1) Researchers have admitted that they do not really know how much global warming will increase in the next fifty years.
2) My professor congratulated me on passing with an A.
3) Tom asked me if I had stayed at home or gone out the day before.
4) At that time the exterior of the hotel was still being renovated.
5) They offered to do their best to situation.
6) At the car rental desk, they told them not to leave theirr luggage in a rental car.
7) Their brother apologised for not having been able to provide much support lately.
8) Visa application forms are required to be filled in online.