QUESTION: Fix punctuation: Did someone email you a CP file and youre not sure how to open it Maybe you have found a CP file on your computer and wondering what its for Windows might tell you that you cant open it or in the worst case you might encounter a CP file related error message
ANS: Did someone email you a CP file and you're not sure how to open it? Maybe you have found a CP file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a CP file related error message.

QUESTION: Fix punctuation: Coil heat exchanger and unmounted pipework package available as option sizes 12120
ANS: Coil heat exchanger and unmounted pipework package available as option (sizes 12-120)

QUESTION: Fix punctuation: The contents stretched from the concrete materialistic painting through painting as storytelling to the heavy sentimental couch piece
ANS: The contents stretched from the concrete, materialistic painting through painting as storytelling to the heavy sentimental couch piece.

QUESTION: Fix punctuation: It showed many options and I was about to click on Eject option but mistakenly clicked on Format option that was present just above Eject Soon after choosing Format option my computer displayed a message that formatting will erase all the data present in the drive
ANS:
It showed many options and I was about to click on "Eject" option, but mistakenly clicked on "Format" option that was present just above "Eject". Soon after choosing "Format" option, my computer displayed a message that formatting will erase all the data present in the drive.