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: Malignant tumors are more dangerous, and survival times can range from ____ months to several years.\Question: Choose the right answer from options given a) one b) no c) ten d) six

SOLUTION: d

PROBLEM: Roundworms are fairly large worms that can grow to be ____ or five inches long.\Question: Choose the right answer from options given a) no b) nine c) four d) zero

SOLUTION: c

PROBLEM: Autism is a developmental disability that typically appears during the first ____ years of life.\Question: Choose the right answer from options given a) one b) six c) five d) three

SOLUTION:
d