TASK DEFINITION: Given a sentence with a missing word, pick the answer option that best fills out the missing word in the sentence. Indicate each answer with its index ('a', 'b', 'c', 'd').
PROBLEM: Double price is based on two golfers sharing ____ room.\Question: Choose the right answer from options given a) one b) zero c) six d) nine

SOLUTION: a

PROBLEM: Pelicans use ____ different ways to feed.\Question: Choose the right answer from options given a) no b) nine c) one d) two

SOLUTION: d

PROBLEM: Most jet airplanes have two, three or ____ engines, depending on aircraft size.\Question: Choose the right answer from options given a) one b) nine c) ten d) four

SOLUTION:
d