Add spaces: Itwasagooddayforthestudents,theparentsandnotleastushereatSamsEnergyAcademy.

Answer: It was a good day for the students, the parents and not least us here at Sams Energy Academy.

Add spaces: Foldthesides,asshowninthediagram.

Answer: Fold the sides, as shown in the diagram.

Add spaces: ProgramModification:Sometimes,notonlyvirusBackdoor:Win32/Cafeini.1_0ormalwareWindstySystemOptimizerbutalsocommonsoftwarespossessingtheabilitytomodifytheinnerfunctionsofehtray.exe,whichmeansotherprogramscan'tfindthisDLLfileagain.

Answer:
Program Modification: Sometimes, not only virus Backdoor:Win32/Cafeini.1_0 or malware Windsty System Optimizer but also common softwares possessing the ability to modify the inner functions of ehtray.exe, which means other programs can't find this DLL file again.