But is that a valid reason why he should be in the show?
There's not one valid reason why I should try to keep our marriage going by myself.
I can't see any valid reason for not giving, say 30 minutes notice.
One reason, good and valid, she never even thought of.
Am I doing this for any kind of really valid reason?
Someone who had a valid reason to visit him frequently.
Probably because I couldn't give her any, not valid reasons.
There are many valid reasons to have more than one screen name.
This wasn't a valid reason but it was a good one.
Well you got a valid reason for having a fast machine.