Add punctuation: Unsure about which type of CB4 file you have Do you want to know exactly what it is who created it and how to open it
A: Unsure about which type of CB4 file you have? Do you want to know exactly what it is, who created it, and how to open it?

Add punctuation: Archive November 2015
A: Archive - November 2015

Add punctuation: SOS More grapes for champagne
A:
SOS: More grapes for champagne