A great many books _______________ on the topic of leadership.

• Adjective-এর নিয়ম অনুযায়ী,
- Many/ a great many/ a good many এর সাথে Noun/pronoun ও verb- plural হয়।
- Many a/an এর পর noun/pronoun ও verb- singular হয়।

• তাই নিয়মানুযায়ী শূন্যস্থানে সঠিক উত্তর - have been written.
- A great many books have been written on the topic of leadership.

Example Sentence:
1. A great many ideas were discussed during the brainstorming session.
2. A great many species are at risk of extinction due to habitat destruction.