Johnny Depp is the (talented) actor She is (beautiful) than lara
He is the (smart) boy in the class
Nick runs (fast) than Jack
Julia is the (young) girl in the group
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Johnny Depp is the (talented) actor.

* most talented

She is (beautiful) than Lara.

* more beautiful

He is the (smart) boy in the class.

* smartest

Nick runs (fast) than Jack.

* faster

Julia is the (young) girl in the group.

* youngest