can, could, will do, capable
completely
well i guess you could just use it more in everyday talk. or if your feelin 1800's you could use it to condemn people!
I don't know if you are allergic to anything, but you can get the wheat free pasta, or altogether try rice, polenta, gnocci (think i spelt that right, so good!)
iron is used by many manufacturers around the world to buil stadiums buildings etc