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: Takins can even balance on their hind hooves to nibble on vegetation ____ feet above ground.\Question: Choose the right answer from options given a) two b) no c) nine d) eight

SOLUTION: d

PROBLEM: Most children have a vocabulary of eight to ____ words, including names, by eighteen months of age.\Question: Choose the right answer from options given a) ten b) one c) seven d) eight

SOLUTION: a

PROBLEM: Psychiatrists say that one in ____ people is mentally ill.\Question: Choose the right answer from options given a) zero b) seven c) four d) five

SOLUTION:
c