Answer:
Entonces, anteayer fue 26 de Junio.
Okay so use this since I already translated it you
D. He developed a theory on the extinction of dinosaurs
My Hat, Your Hat: Understanding Possessive Adjectives
Singular Noun Plural Noun Translation
mi mis my
tu tus your (familiar)
su sus their, your, his, her , its
nuestro/a nuestros/as our