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: Casinos have no windows and they have ____ clocks.\Question: Choose the right answer from options given a) six b) four c) eight d) no

SOLUTION: d

PROBLEM: Ales actively ferment with yeast for two to ____ days.\Question: Choose the right answer from options given a) five b) nine c) three d) six

SOLUTION: c

PROBLEM: Conventional medicine has ____ major approaches to immune dysfunction.\Question: Choose the right answer from options given a) no b) zero c) three d) one

SOLUTION:
c