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: Most people have ____ kidneys.\Question: Choose the right answer from options given a) two b) five c) seven d) six

SOLUTION: a

PROBLEM: Dunes are of ____ types - linear and parabolic.\Question: Choose the right answer from options given a) three b) four c) ten d) two

SOLUTION: d

PROBLEM: Mexican households consist of an average of ____ or six people.\Question: Choose the right answer from options given a) seven b) six c) five d) eight

SOLUTION:
c