Add punctuation: The ufologist here are generally optimistic and believe that this time X will be a great opportunity to cultural and technological between the two civilizations
A: The ufologist here are generally optimistic and believe that this time X will be a great opportunity to cultural and technological between the two civilizations.

Add punctuation: Scientific name Carabus problematicus
A: Scientific name: Carabus problematicus

Add punctuation: And in order to thank all the uses support and also as a return DLL Suite introduced this Free Download Service to help millions of PC users suffering from DLL errors like SystemPropertiesDataExecutionPreventionexe
A:
And in order to thank all the uses' support and also as a return, DLL Suite introduced this Free Download Service to help millions of PC users suffering from DLL errors like SystemPropertiesDataExecutionPrevention.exe.