Double doubt this Sunday... 
What's the different meaning of the two sentences below, and why is the second wrong provided that both sale and selling mean a transaction?
the print shop hasn't finished printing our sales materials yet!
the print shop hasn't finished printing our selling materials yet!
Thanks in advance for your helping hand!
What's the different meaning of the two sentences below, and why is the second wrong provided that both sale and selling mean a transaction?
the print shop hasn't finished printing our sales materials yet!
the print shop hasn't finished printing our selling materials yet!
Thanks in advance for your helping hand!