Your answer would be el camarero
1. “Yo busque la mochila...”
2. “Ella tenía dos años...”
3. “Vives tu en...”
Patagonia (Spanish pronunciation: [pataˈɣonja]) is a sparsely populated region located at the southern end of South America<span>, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, pampas and grasslands east of this southern portion of the Andes.</span>
Los chicos ponen las manzanas en la nevera should fit into the sentence.
I hope this helps!
Cheers, July.