Question

the fire brigade arrived_____the villagers had doused the fire (when/whenever)​

Answer 1

Answer:

The fire brigade arrived "when"  the villagers had doused the fire.

                           Hope it helps you^_^

Answer 2

Answer:

The fire brigade arrived when the villagers had doused the fire.

Explanation:

➵We are dealing with prepositions here.

➵We chose the option 'when' here because it is referring to an incident where the fire brigade arrived after the villagers doused the fire

➵The option 'whenever' was not appropriate as it leads to the the conclusion of the sentence that the late arrival of the fite brigade was a regular gesture.