QUES: Manually editing the Windows registry to remove invalid CWUDJS keys is not recommended unless you are PC service professional

correct the punctuation.

CORRECTED: Manually editing the Windows registry to remove invalid CWUD.JS keys is not recommended unless you are PC service professional.

QUES: Everybody loves a great story

correct the punctuation.

CORRECTED: "Everybody loves a great story.

QUES: A lack of trust wafted through the Copenhagen air when negotiators gathered at Decembers United Nations climate summit

correct the punctuation.

CORRECTED:
A lack of trust wafted through the Copenhagen air when negotiators gathered at December's United Nations climate summit.