solo sight singing - "Peace Like a River"

Try to sight sing Peace Like a River.   It is in the key of C major, but you can just pick a comfortable pitch for the tonic (C) if you aren't close to an instrument to give you the C.  If you do have an instrument to get your starting pitch and/or the tonic, trust yourself to figure out the rest without playing it first.  The song starts on "so" and ends on "do".  You can listen to the song to check yourself, although I sing the words rather than the solfege.