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