To fill up the blank in the sentence "One should do ---- duty" we need ---
A
his
B
her
C
the
D
one's
Correct Answer: one's
One এর possessive adjective হলো - One's. সুতরাং Duty এর পূর্বে One's বসবে। সুতরাং সঠিক উত্তর হবে - One should do (one's) duty.