posted. Posted is not a synonym for informed.
Wrong. Keep me posted on what happens while I am gone.
Right. Keep me informed of what happens while I am gone.
providing. Providing is not a synonym for if.
Wrong. I can go providing it does not rain.
Right. I can go if it does not rain.
put in.
Wrong. I put in two years at college.
Right. I spent two years at college.
put up.