Alstar Sport is a leading sports retailer in the United Kingdom. The company was established (21)______ 1971 by the owner of a small leisure center in Leeds. After (22)______ steadily from a company with just a few stores to one with over 120, Alstar Sport was finally floated on the London Stock Exchange in 1995. The company's principal aim since it was first founded has been to (23)______ its customers with high-quality sports and leisure products (24) ______ competitive prices.
The company's main customers regularly participate (25)______ sport, although the stores also attract people who are (26) ______ looking for leisure and casual wear.
Alstar Sport is still based in Leeds,where the company's head office is (27) ______ .The company has recently acquired the sports Eddie Wilkins plc. According to Peter Carmichael, the Chief Executive, this would provide (28)______ excellent opportunity for growth (29)_____expansion in the United Kingdom.'It's given us much (30)______ market than we've had until now,' he says.
请回答第（21）空
A.on B.at C.in正确答案C
