Question

he sat me................ all night fill preposition​

Answer 1

The question has been framed in an incorrect way and should be:

He sat .............. me all night.

The correct preposition to be filled in the blank is 'beside'.

He sat beside me all night.

* The proposition 'beside' is used to indicate the position of something or someone just next to another.

* This word shouldn't be confused with 'besides' which means 'in addition to'.

* In the given contest, the person 'he' is sitting next to the speaker and hence this word is the best suited one.