V. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.
Gherkin
The Gherkin is one of several modern buildings that have been built over the years in a historic area of London. The (21)__________ skyscraper was built in 2004, and its unique, and energy-efficient design has won the Gherkin many (22)__________. The cigar-shaped structure has a steel frame (23)__________circular floor planes and a glass facade with diamond-shaped panels. The building's energy-saving (24)__________ allows the air to flow up through spiraling wells. The top of the tower, (25) __________visitors find an open hall covered by a glass conical dome, is even more spectacular. From here you have great views over the city.
21. A. 41 stories B. 41-stories C. 41-story D. story-41
22. A. awards B. rewards C. stories D. achievements
23. A. of B. with C. at D. in
24. A. machine B. machines C. system D. systems
25. A. where B. at where C. from where D. there
