“Are you OK?” “Yes, I am OK.” You may hear this kind of talk around you. “OK” ____ most widely ________ (use) around the world. Where did “OK” come from? Let’s take a look! “OK” was first written in the Boston Morning Post on March 23, 1839. It read: o.k. - oll correct (all correct). It was only a joke at that time. But later “OK” _____ (become) popular. People used it ______ (say) that all was well. Today we use this expression many times a day.