SECRET SHOPPERSTim Wright knows

SECRET SHOPPERS
Tim Wright knows all about making companies more efficient. His firm, Check-up, sends 'secret shoppers' into retail and leisure companies ___29___ order to make sure that customers are receiving good service. After ___30___ visit, the secret shoppers prepare a report for the company to let them know ___31___good or bad the service was.
"Companies like to know, "says Mr. Wright,“that ___32___customers go into a store just a few minutes before closing time, they will ___33___get good service. "Check-up ___34___ set up in the west of England in 1992 and ___35___two years moved to London so it could offer a nationwide service. ___36___ the last three years, Check-up's profits have ___37___ dramatically as companies have come to realize ___38___ great importance of good customer service. Having started with just three employees, Check-up now has a staff ___39___ sixty-five and last week ___40___an important new contract with a major supermarket chain.
回答第（35）空
A、until
B、after
C、later
【正确答案】：B