Choose the correct word A, B, C or D for each of the gaps to complete the following text
Tokyo, the capital of Japan, is a big city. The city is filled with factories, large office buildings, banks, restaurants, and shops of all sizes. It is a (53)_________ for Japanese art, and is home to more than 100 colleges and universities. The city is (54) ________ an important seaport. Most Janpanese companies have (55) _________ main offices in Tokyo. At the heart of Tokyo. At the heart of Tokyo is the Imperial Palace. This is the place where the Emperor of Japan lives with his family. Tokyo is one of the world's biggest and most crowded (56)_______ . 53. A. house B. city C. centre D. capital 54. A. and B. also C.but D.so 55. A.its B. their C. thiers D. some 56. A. city B. a city C. cities D.the cities