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: Parliaments can last five years, often last ____ and a bit.\Question: Choose the right answer from options given a) four b) three c) five d) two

SOLUTION: a

PROBLEM: Water softeners add sodium to drinking water in ____ ways.\Question: Choose the right answer from options given a) zero b) six c) two d) nine

SOLUTION: c

PROBLEM: Stitches go through the spine linings around ____ threads at head and tail.\Question: Choose the right answer from options given a) seven b) four c) three d) five

SOLUTION:
c