QUESTION: Fix punctuation: Even with aluminum gas cylinders of gas levels can be used reliably
ANS: Even with aluminum gas cylinders of gas levels can be used reliably.

QUESTION: Fix punctuation: Once again Labofas conference chair TORO could be the right choice These chairs have the exact characteristics that makes them both easy and convenient to store
ANS: Once again, Labofa's conference chair TORO could be the right choice: These chairs have the exact characteristics that makes them both easy and convenient to store.

QUESTION: Fix punctuation: For Christmas gifts ideas for heryou can send your loved one this X2 Jaybird Wireless Bluetooth headsetIt is a beautifully designed sports headset for handsfree enthusiasts It functions to give you high quality audio via Bluetooth mainly for skipfree music outdoors It can stay up to 8 hours long playing music as well as making and receiving calls which you can check using a remote control
ANS: For Christmas gifts ideas for her,you can send your loved one this X2 Jaybird Wireless Bluetooth headset.It is a beautifully designed sports headset for hands-free enthusiasts. It functions to give you high quality audio via Bluetooth, mainly for skip-free music outdoors. It can stay up to 8 hours long playing music as well as making and receiving calls, which you can check using a remote control.

QUESTION: Fix punctuation: But I would have written this it would probably not have time to read before the grades are added
ANS:
But I would have written this it would probably not have time to read before the grades are added.