input question: Fix spacing: OneofhistutorsatCambridgedescribedhimasaverygoodstudentbutcertainlynotthetopstudentinhisyear.Apparentlyhewouldalwayscometohistutorialscarryingaviolincase.

output answer: One of his tutors at Cambridge described him as a very good student but certainly not the top student in his year. Apparently he would always come to his tutorials carrying a violin case.
Problem: Itisresistanttochemicalprocedurestakingplaceinthemouthcavity.Tissue-friendly,resistanttocorrosion.
What's a sentence that uses these characters?
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It is resistant to chemical procedures taking place in the mouth cavity. Tissue-friendly, resistant to corrosion.
Add spaces: Withaswitch,fiveramptimesandthesupplyfrequency(50or60Hz)canbechosen.

Answer: With a switch, five ramp times and the supply frequency (50 or 60Hz) can be chosen.
MadameBellocwantstotranslatemybookintoFrench;Ihaveofferedtolookoverproofsforscientificerrors.

Madame Belloc wants to translate my book into French; I have offered to look over proofs for scientific errors.
[Q]: [Debianinvitesyoutoits20thbirthday]
[A]: [Debian invites you to its 20th birthday]
Problem: Add spaces: ThevillaprovidesroomsfeaturingcableTVwithon-demandmovies,paytelevision,asittingarea,apersonalcomputeranddirectdialtelephone.

Spaces added:
The villa provides rooms featuring cable TV with on-demand movies, pay television, a sitting area, a personal computer and direct dial telephone.