Gli articoli determinativi

Definite Articles
Definite articles are the Italian equivalent of the English 'the', indicating a precise, quantifiable object or person. As you probably notice, in Italian we generally use more definite articles than in English.

Definite articles have different forms according to the gender, number, and the first letter of the noun they precede:
ESERCIZIO
ESERCIZIO
In their plural form, definite articles change according to the rules below:
To recap:
ESERCIZI