Choose the most suitable preposition from the given options to fill in the blank in the following sentence:
They insisted ____ paying the full amount in advance.
Show answer & explanation
Correct answer: A
Explanation
Correct Answer: on
Explanation:
• The verb insist is followed by the fixed preposition on (or upon) when taking an object or gerund.
• Pattern: insist + on + verb-ing / noun
• Example: Rohan insisted on carrying his own luggage.
Quick Tip: Prepositions like at, to, or in do not collocate with the verb insist.