Add punctuation: The Windowskey may sometimes get in your way depending on how you use the Windows operating system
A: The Windows-key may sometimes get in your way depending on how you use the Windows operating system.

Add punctuation: A very intrusive and impressive performance even with just one dancer on the stage
A: A very intrusive and impressive performance - even with just one dancer on the stage.

Add punctuation: Clear the board as fast as you can and have fun
A:
Clear the board as fast as you can and have fun!