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: Cows have four stomachs, and the first ____ yield merchantable tripe.\Question: Choose the right answer from options given a) two b) five c) zero d) three

SOLUTION: d

PROBLEM: Altimetric satellites are usually limited life missions lasting approximately three to ____ years.\Question: Choose the right answer from options given a) five b) ten c) four d) eight

SOLUTION: b

PROBLEM: Inland birds are ____ less interesting and variable than the seabirds.\Question: Choose the right answer from options given a) no b) ten c) two d) eight

SOLUTION:
a