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: Nematodes occur in ____ general forms.\Question: Choose the right answer from options given a) nine b) two c) seven d) ten

SOLUTION: b

PROBLEM: Water is forced through a system which breaks it into drops as small as ____ microns.\Question: Choose the right answer from options given a) five b) three c) ten d) seven

SOLUTION:
a