Which one is the correct sentence?

- Much, more, little or less যদি Singular Noun এর অংশরূপে ব্যবহৃত হয় তাহলে এদের verb এর singular number হবে।
- Many এর পরে a থাকলে singular verb বসবে, কিন্তু শুধু many থাকলে plural verb বসবে।

-More than a decade have elapsed>More than a decade has elapsed
-Many a student are present> Many a student is present.
-Many people was killed> Many people ware killed.