incumbent
[ɪnˈkʌmbənt] (fml)adjective
to be incumbent (up)on sb to do sthg spettare a qn fare qc
incumbent
[ɪnˈkʌmbənt] (fml)noun
[postholder] titolare mf
Complétez la séquence avec la proposition qui convient.
I can't find my book. Look, it is … your desk.