Actually, the superlative form of "bonita" wouldn't be "bonitísima", it would merely be "muy bonita". Just like "very beautiful", not "beautifullest"
Estuviste because estuviste is past tense for tú
1. Dormirá 2. Leyendo 3.sirvieron 4. Trajo 5.Seguimos 6. Vestiste
Costa rica protects 23% of it's total territory in national parks.