QUESTION: Fix punctuation: Before you can open a QN2 file youll need to figure out what kind of file the QN2 file extension refers to
ANS: Before you can open a QN2 file, you'll need to figure out what kind of file the QN2 file extension refers to.

QUESTION: Fix punctuation: This product was added to our catalog on Monday 22 April 2013
ANS: This product was added to our catalog on Monday 22 April, 2013.

QUESTION: Fix punctuation: If you want to know in advance what turns me off I dont like being made fun of or insulted
ANS: If you want to know in advance what turns me off: I don't like being made fun of or insulted.

QUESTION: Fix punctuation: Belgium lottery results Saturday 6 August 2016
ANS:
Belgium lottery results - Saturday 6 August 2016