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: Metabolism have ____ stages-catabolism and anabolism.\Question: Choose the right answer from options given a) nine b) two c) five d) three

SOLUTION: b

PROBLEM: Black widows mature in ____ to four months.\Question: Choose the right answer from options given a) two b) seven c) eight d) zero

SOLUTION: a

PROBLEM: Chinese dragons have ____ toes, Korean four and Japanese three.\Question: Choose the right answer from options given a) five b) seven c) zero d) nine

SOLUTION:
a