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Determiners
Indefinite articles : a or an (British Council)
https://bilingueanglais.com/blog/15981/a-ou-an/
Some or any (English exercises)
Determiners Quiz (English Club)
A / an / some / any : choose the right answer
A / an / some / any (English grammar)
Demonstratives (this or that / these or those ?)
Possessive adjectives - answer the questions