When a volcano (1)_____, hot gases and melted rock from deep within Earth find (2)_____ way up to the surface. This material may (3)_____ slowly out of a crack in the ground, or it may explode suddenly into the air. Volcanic eruptions may be very (4)_____. But they can (5)_____ create new landforms. Of the nearly 1,900 volcanoes active today, or known to have been active in (6)_____ times, about ninety per cent can be found in the (7)_____ of South America, North America, Asia, and Oceania that are close (8)_____ the Pacific Ocean. When marked on a map of the world, this line of volcanoes looks a bit (9)_____ a vast, open circle. For this (10)_____ it is known as the ring of fire. 1. A. blows B. erupts C. throws 2. A. they B. their C. them 3. A. come B. leave C. flow 4. A. destruction B. destroy C. destructive 5. A. too B. also C. so 6. A. history B. historical C. historically 7. A. areas B. pieces C. ways 8. A. to B. at C. with 9. A. as B. like C.so 10. A. reason B. aim C. condition Choose the correct answer 11. Is the new computer system _____________ next month?  A. been installed  B. being installed  C. being installed by people  D. be installed  12. The longest fish in the contest was 18 inches long. It_____ by Theme River. a. was catching             b. caught               c. was caught               d. catch 13. "Are we about to have dinner?". "Yes, it _____ in the dining room". a. is serving                b. serves                 c. is being served                d. served 14. "Where's the old chicken coop?" "It_____ by a windstorm last year." a. destroy              b. is destroyed               c. was destroyed                   d. destroyed 15. "We're still looking for Thomas". "Hasn't he_____ yet?". a. been found                b. to find                c. found               d. being found 16. "Diana is a wonderful ballet dancer". "She_____ since she was four". a. has danced             b. has been danced           c. is dancing             d. was danced 17. "What a beautiful dress you're wearing!" "Thank you. It _____ by a French tailor". a. is made               b. has made           c. made             d. was made 18. "Those eggs of different colors are very creative." "Yes, they_____ in Russia". a. were painted               b. were paint                c. were painting                d. painted 19. Gold_____ in California in the 19 th century. a. was discovered                  b. has been discovered c. was discover   d. they discovered. 20. Somebody cleans the room every day. a. The room every day is cleaned.              b. The room is every day cleaned. c. The room is cleaned every day.               d. The room is cleaned by somebody every day. 21. They cancelled all flights because of fog. a. All flights because of fog were cancelled. b. All flights were cancelled because of fog. c. All flights were because of fog cancelled. d. All flights were cancelled by them because of fog. Find the word which has a different sound in the part underlined 22. A. come B. month C. mother D. open 23. A. hope B. homework C. one D. post 24. A. brother B. judo C. going D. rode 25. A. fun B. student C. hungry D. sun