Which sentence is punctuated correctly?
1. Chris, please put the dogs out before you leave.
2. Chris, please put the dogs out, before you leave.
3. Chris please put the dogs out, before you leave.
4. Chris please put the dogs out before you leave. .
Since the second part of the sentence is continuous, you do not need a comma, so that knocks out two and three. Number four has two periods in it, so that isn't correct, either. It is number one.