QUESTION: Fix punctuation: I went on lots of trips where I would volunteer to take passengers
ANS: I went on lots of trips, where I would volunteer to take passengers.

QUESTION: Fix punctuation: The HygTech Alliance is a great opportunity to design and develop cleanroom solutions for various sites in accordance with the customers needs says Harry Kouri sales manager and expert in powder coatings at Teknos
ANS: "The HygTech Alliance is a great opportunity to design and develop cleanroom solutions for various sites in accordance with the customer's needs," says Harry Kouri, sales manager and expert in powder coatings at Teknos.

QUESTION: Fix punctuation: Three types of lubricant systems have been mapped in this project
ANS: Three types of lubricant systems have been mapped in this project.

QUESTION: Fix punctuation: The Cathedral of Porto on the outcrop above the Ribeira square is also within walking distance as is the Torre dos Clerigos the imposing Avenida dos Aliados and the So Bento train station from where one can continue ones travels to the rest of Portugal or indeed the rest of Europe
ANS:
The Cathedral of Porto, on the outcrop above the Ribeira square, is also within walking distance, as is the Torre dos Clerigos, the imposing Avenida dos Aliados, and the São Bento train station, from where one can continue one’s travels to the rest of Portugal, or indeed the rest of Europe.