Explanation: • শূন্যস্থানে সঠিক উত্তর হবে - on.
- Complete Sentence: Do not insist on his going there.
• Insist on/upon/ Insist on doing something
- To keep doing something, even if it annoys other people, or people think it is not good for you.
- বাংলায়, কোনো কিছুতে জোর দেয়া বা পীড়াপীড়ি করা ।
- Insist on/upon এর সাথে verb এর ing form বসে।
যেমন:
- He insisted on my going there.
- She insists on doing everything her own way.