Student left with lucrative work? (7)
I believe the answer is:
learner
'student' is the definition.
(I've seen this before)
'left with lucrative work?' is the wordplay.
'left' becomes 'L' (common abbreviation).
'with' says to put letters next to each other.
'lucrative work?' becomes 'earner' (way of earning money).
'l'+'earner'='LEARNER'
(Other definitions for learner that I've seen before include "New driver" , "Student (of driving?)" , "Trainee (driver)" , "New 17 across" , "One gaining knowledge" .)