We had to climb another 'flight/set of stairs' to get to the roof.
He tripped on the bottom 'stair' and almost fell.
He waited at the foot/bottom of the 'stairs'.
(..) Alex could have a girlfriend. - Alex has a girlfriend? - Yeah, and she's great. She's cute. - Come on, I'll show you. - Where? Walk up the stairs. Walk with me for one sec, I'll show you. So how ever did you get the newest version of Halo? It's not due out for another six months. (..)2009 17 Again