Q: Remove the spaces from the following sentence: For those who have been using the software previously, it is also possible to upgrade to the full version without having to reinstall anything.
A: [Forthosewhohavebeenusingthesoftwarepreviously,itisalsopossibletoupgradetothefullversionwithouthavingtoreinstallanything.]

Q: Remove the spaces from the following sentence: At check-in, you will need a valid photographic ID and a credit/debit card for pre-authorisation.
A: [Atcheck-in,youwillneedavalidphotographicIDandacredit/debitcardforpre-authorisation.]

Q: Remove the spaces from the following sentence: Program Modification: Sometimes, not only virus Backdoor:Win32/Death.B or malware QuuSoft System Care but also common softwares possessing the ability to modify the inner functions of hpzppw72.dll, which means other programs can't find this DLL file again.
A: [ProgramModification:Sometimes,notonlyvirusBackdoor:Win32/Death.BormalwareQuuSoftSystemCarebutalsocommonsoftwarespossessingtheabilitytomodifytheinnerfunctionsofhpzppw72.dll,whichmeansotherprogramscan'tfindthisDLLfileagain.]

Q: Remove the spaces from the following sentence: In addition to recycling benefiting the environment, the enterprise also saves administration and transport costs.
A:
[Inadditiontorecyclingbenefitingtheenvironment,theenterprisealsosavesadministrationandtransportcosts.]