instruction:
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').
question:
Most aphthous ulcers heal in one to ____ weeks.\Question: Choose the right answer from options given a) two b) eight c) one d) seven
answer:
a


question:
Songbirds have ____ sets of vocal chords.\Question: Choose the right answer from options given a) six b) two c) eight d) ten
answer:
b


question:
Gestation is eight to ____ months long, after which a single calf is born.\Question: Choose the right answer from options given a) zero b) three c) nine d) five
answer:

c