Add punctuation: Gambling is a game of chance
A: Gambling is a game of chance.

Add punctuation: In this context emphasis should be placed on optimising energy efficiency in the future processing and transport system
A: In this context, emphasis should be placed on optimising energy efficiency in the future processing and transport system.

Add punctuation: Removes ammonia benzene xylene and formaldehyde from the air in your home
A:
Removes ammonia, benzene, xylene and formaldehyde from the air in your home.