LA DÉTERMINATION : A, AN, THE

We just found $\underline{\phantom{blabla}}$ elephant.

$\underline{\phantom{blabla}}$ boy in the photo is called Fred.

Please give me $\underline{\phantom{blabla}}$ apple you've just bought.

$\underline{\phantom{blabla}}$ car in front of the building is a Porsche.

I don't like $\underline{\phantom{blabla}}$ candy.

$\underline{\phantom{blabla}}$ Président Trump is unpopular in the USA.

On $\underline{\phantom{blabla}}$ Tuesday, I will go to my piano lesson.

I've just bought $\underline{\phantom{blabla}}$ table.