Emma is on holiday, so I ... after her cat until she returns a. look b. am looking c. have looked d. looked 6. David... of dressing up as a pirate for the Halloween party next Sunday a. thinks b. think c. is thinking d. are thinking 7. Can you have a look at Ann's computer? She ... to fix it all morning and it still doesn't work a. tried b. has tried c. tried d. has been trying 8. It ... have been John who answered the phone last night; I know there was no one else at home a. might b. must c. can d. may 9. Susan ... abroad before and she was very excited before her first trip to Europe a. has never b. was never been c. had never been 10. I will never forget ... Saint Petersburg for the first time a. to visit b. visit d. was never being c. visiting d. visited 110 Task 4. Read the text and match the headings (A-F) to the paragraphs (1-5). There is one heading you don't need to use. The Tunguska Exposition 1. ... A little over 100 years ago, on the morning of 30th June 1908, there was a huge explosion in the sky above the Tunguska River in Siberia. It was as if a giant bomb had gone off over the area. In fact, the explosion was so powerful that it killed 80 million trees, destroying a natural area of over 13,000 square kilometres in size. 2. ... People who saw the explosion back then all gave similar descriptions of the event: an extremely bright light, as if the sky were on fire, followed by a deafening crashing sound and strong wind. This wind was so strong that it brought down