input: This could be done as one solution by making it possible for all workers to have two jobs
fixed: This could be done, as one solution, by making it possible for all workers to have two jobs.

input: The product can be labelled either by application of a label on the product itself or by a reference in the product documentation
fixed: The product can be labelled either by application of a label on the product itself or by a reference in the product documentation.

input: Ptolemy s Almagest was one of the works which Arabic scientists studied intently
fixed: Ptolemy 's Almagest was one of the works which Arabic scientists studied intently.

input: The ISACA offers multiple CISA study materials including study guides CISA practice questions the CISA Review Manual and several supplemental materials including a CD Rom These materials are offered in English as well as in other languages You can also look for CISA review and guidebooks from nonISACA learning sources
fixed:
The ISACA offers multiple CISA study materials including study guides, CISA practice questions, the CISA Review Manual, and several supplemental materials including a CD Rom. These materials are offered in English as well as in other languages. You can also look for CISA review and guidebooks from non-ISACA learning sources.