### Clue: Be responsible for ordinary poem having echo (7)
### Answer: OVERSEE 
 ### Explanation: O(*ordinary*, as used in conjunction with other words, eg. O Level exams, O S(eaman), O L(east) S(quares) (a statistical term)) + VERSE(*poem*) +(*having*) E(E for *echo* in the phonetic alphabet).  Defn:  *Be responsible for*,manage.