Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 34 to 38.

An Energy Booster
When you train, your body loses the essential vitamins and nutrients necessary to function properly. For many years, athletes have compensated for this loss by drinking beverages designed to restore and rehydrate what the body loses. One such substance ___(1)___ has been on the market as a nutritious substitute is the sports drink Gatorade. Gatorade got its start back in 1965, when ___(2)___ medical researchers at the University of Florida were asked by the football team to find a dietary ___(3)___ that would help keep the players energetic during the long, hot practices in the Florida heat. The doctors went about experimenting to create a new, healthy sports drink. ___(4)___ it took a lot of work, they eventually came up with a drink that helped improve athletes’ endurance. The team decided to call the drink ‘Gatorade’. Soon, the entire team started drinking Gatorade regularly, and to prove the ___(5)___ of the new tonic, the Gators went on to win the Orange Bowl in 1967.