QUESTION: Fix punctuation: In the case that your XL file doesnt open it is highly likely that you do not have the correct software application installed on your PC to view or edit XL file extensions
ANS: In the case that your XL$ file doesn't open, it is highly likely that you do not have the correct software application installed on your PC to view or edit XL$ file extensions.

QUESTION: Fix punctuation: Jet Time does not offer special meals for children
ANS: Jet Time does not offer special meals for children.

QUESTION: Fix punctuation: You may run into the same problem as Randy Garabedian from China lets see what helps this friend solving it My Dell has experienced feclientdll was not found problem when playing Enemy Engaged Comanche vs Hokum
ANS: You may run into the same problem as Randy Garabedian from China, let's see what helps this friend solving it -- "My Dell has experienced "feclient.dll was not found" problem when playing Enemy Engaged: Comanche vs. Hokum.

QUESTION: Fix punctuation: We should also remember that many freshwater productions are low in the scale of nature and we have reason to believe that low beings change or become modified less quickly than the high and this will give a longer time than the average for the migration of the same aquatic species
ANS:
We should also remember that many fresh-water productions are low in the scale of nature, and we have reason to believe that low beings change or become modified less quickly than the high; and this will give a longer time than the average for the migration of the same aquatic species.