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: Angiosperms inhabit all ____ continents, as well as the oceans.\Question: Choose the right answer from options given a) five b) seven c) three d) zero

SOLUTION: b

PROBLEM: Female cats can go into heat for the first time as early as ____ months of age.\Question: Choose the right answer from options given a) four b) zero c) five d) eight

SOLUTION: c

PROBLEM: Rats can jump up to ____ feet and climb wires and pipe very well.\Question: Choose the right answer from options given a) six b) no c) three d) two

SOLUTION:
c