I bought pictures when I was holiday June. Now I'm going to hang them the wall.

on, in, on

on, for, on

on, in, along

in, in, along

Explanation

"I bought pictures when I was on holiday in June. Now I'm going to hang them on the wall."

On holiday is the correct phrase used to indicate the period during which someone is away from work or regular activities, typically for leisure.

In June is used because we refer to months with the preposition in.

On the wall is correct when talking about the placement of something, such as pictures or frames, on a flat surface like a wall.