QUESTION: Fix punctuation: We offer comprehensive support to ensure you can get the exact colour needed
ANS: We offer comprehensive support to ensure you can get the exact colour needed.

QUESTION: Fix punctuation: It would be reasonable to suppose the further ahead in the backgammon game the program goes the more accurate will be the backgammon analysis
ANS: It would be reasonable to suppose the further ahead in the backgammon game the program goes, the more accurate will be the backgammon analysis.

QUESTION: Fix punctuation: You may use it as is but must cite the corresponding reference see below
ANS: You may use it "as is" but must cite the corresponding reference (see below).

QUESTION: Fix punctuation: Ensure that your shoulders are lowered
ANS:
Ensure that your shoulders are lowered.