QUESTION: Fix punctuation: The Important industries are electronic commission and tourism
ANS: The Important industries are electronic, commission and tourism.

QUESTION: Fix punctuation: Due to instability Supermarine had to make extensive changes to the model before it was accepted by RAF Mk 21 was faster and climbed better that the Mk XIV but its flight characteristics were not as pleasant as the Mk XIVs
ANS: Due to instability Supermarine had to make extensive changes to the model before it was accepted by RAF. Mk. 21 was faster and climbed better that the Mk. XIV, but its flight characteristics were not as pleasant as the Mk. XIV's.

QUESTION: Fix punctuation: Petroleum products that commonly poison small animals are fuels solvents lubricants and waxes as well as some pesticides and paints that have a petroleum base
ANS: Petroleum products that commonly poison small animals are fuels, solvents, lubricants, and waxes, as well as some pesticides and paints that have a petroleum base.

QUESTION: Fix punctuation: IPOO1X Industrial turnover nonseasonally adjusted 2000100 by turnover and industry DISCONTINUED
ANS:
IPOO1X: Industrial turnover (non-seasonally adjusted) (2000=100) by turnover and industry (DISCONTINUED)