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: Waves can sometimes reach ____ feet tall, while still being playful and fun.\Question: Choose the right answer from options given a) nine b) eight c) ten d) no

SOLUTION: c

PROBLEM: Japan is a highly urbanised country, with approximately three in every ____ people living in cities.\Question: Choose the right answer from options given a) seven b) two c) four d) eight

SOLUTION: c

PROBLEM: Female cats become sexually mature between ____ and twelve months of age.\Question: Choose the right answer from options given a) five b) seven c) six d) zero

SOLUTION:
b