Answer:
They each have a reading that repeats a sound.
調 CHOU, shira(beru), totono(eru) - investigate, prepare
響 KYOU, hibi(ku) - sound, resound, affect, echo
謹 KIN, tsutsushi(mu) - be respectful
堤 TEI, tsutsumi - bank, embankment, dike
只 SHI, tada - only, simply