QUESTION: Fix punctuation: Sit back straight shoulders relaxed
ANS: Sit back straight, shoulders relaxed.

QUESTION: Fix punctuation: In the mean time our 16 kW backup generator powered the main dome
ANS: In the mean time, our 16 kW backup generator powered the main dome.

QUESTION: Fix punctuation: Try to match the at least 3 similar cute Dora finish the target in the limited time to complete the task Enjoy This game4301times played
ANS: Try to match the at least 3 similar cute Dora, finish the target in the limited time to complete the task. Enjoy! This game,4301times played.

QUESTION: Fix punctuation: Roster Last change 20130426
ANS:
Roster (Last change: 2013-04-26)