Add punctuation: Enter your Email address to receive a free Swahili grammar download
A: Enter your Email address to receive a free Swahili grammar download.

Add punctuation: Arrived December 11 and is being scrapped
A: Arrived December 11. and is being scrapped

Add punctuation: The software offers perfect video and audio quality and fast conversion speed
A:
The software offers perfect video and audio quality and fast conversion speed.