Question

His oratory skill will surely work ..the crowd

Answer 1

his oratory skill will surely work in the crowd..

hope this helps...

Answer 2

Answer :

This question is based on prepositions.

Cambridge English Dictionary defines 'preposition' as 'a word that connects a noun, a noun phrase, or a pronoun to another word, esp. to a verb, another noun, or an adjective.'

'On' is a preposition, which according to Cambridge English Dictionary means 'used to show that a condition or process is being experienced.'

So, the correct sentence is :

His oratory skill will surely work on the crowd.