Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks.

Singapore has a highly developed market-based economy, ___(1)___ historically revolves around extended trade. Along with Hong Kong, South Korea and Taiwan, Singapore is one ___(2)___ The Four Asian Tigers. The economy depends heavily on exports , refining, imported goods, especially in manufacturing.

Manufacturing constituted 26 ___(3)___ of Singapore’s GDP in 2005. The manufacturing industry is well-diversified into electronics, petroleum refining, chemicals, ___(4)___ engineering and biomedical sciences manufacturing. In 2006, Singapore produced about 10 percent of the world’s foundry water output. Singapore is the busiest port in the world in terms of tonnage shipped. Singapore is the world’s fourth largest foreign exchange trading centre after London, New York City ___(5)___ Tokyo.