A decade ... ... since the discovery of leprosy vaccine. Choose the right option to fill in the gap.
A. Passed
B. has passed
C. have passed
D. had passed
PUSTUnit-Bইংরেজি - গ্রামার ও ভোকাবুলারিTense & Sequence of TensePUST - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
সঠিক উত্তরঃ
B.
has passed
Explanation:

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