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: Mosquitoes spend one to ____ days in the pupae stage.\Question: Choose the right answer from options given a) zero b) two c) five d) three

SOLUTION: b

PROBLEM: Blood pressure is measured by ____ numbers.\Question: Choose the right answer from options given a) zero b) eight c) two d) seven

SOLUTION: c

PROBLEM: Colour photos use ____ layers of silver salts, sensitive to red, blue or green light.\Question: Choose the right answer from options given a) three b) seven c) eight d) nine

SOLUTION:
a