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: Foresters usually work ____ hours a day, five days a week.\Question: Choose the right answer from options given a) six b) five c) seven d) eight

SOLUTION: d

PROBLEM: Natural indium contains ____ isotopes.\Question: Choose the right answer from options given a) one b) eight c) two d) seven

SOLUTION: c

PROBLEM: Weight loss helps people with diabetes in ____ ways.\Question: Choose the right answer from options given a) two b) six c) five d) three

SOLUTION:
a