Problem: Add spaces: UnsureaboutwhichtypeofCHRTfileyouhave?Doyouwanttoknowexactlywhatitis,whocreatedit,andhowtoopenit?

Spaces added: Unsure about which type of CHRT file you have? Do you want to know exactly what it is, who created it, and how to open it?

Problem: Add spaces: 7)Theitemiscomfortable.

Spaces added: 7) The item is comfortable.

Problem: Add spaces: AfteradozenyearsworkinginsundryEuropeanoperahousesStefanIslandiwascontractedtotheRoyalTheatreinCopenhagenfrom1940onwards.

Spaces added: After a dozen years working in sundry European opera houses Stefan Islandi was contracted to the Royal Theatre in Copenhagen from 1940 onwards.

Problem: Add spaces: 1947:ResearchersatBellLaboratories,theresearchbranchofAT&T,developedtheconceptofthecellulartelephone.

Spaces added:
1947: Researchers at Bell Laboratories, the research branch of AT&T, developed the concept of the cellular telephone.