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: All birds have ____ legs with four toes each.\Question: Choose the right answer from options given a) zero b) one c) three d) two

SOLUTION: d

PROBLEM: Most roots require from three to ____ weeks to dry sufficiently to be safe.\Question: Choose the right answer from options given a) seven b) five c) three d) six

SOLUTION: d

PROBLEM: Composites have at least ____ phases with different mechanical properties.\Question: Choose the right answer from options given a) four b) six c) two d) eight

SOLUTION:
c