Preterite indicates a single event ( something that you dosen't do so often )
the imperfect indicates something that you do habitual
D. He developed a theory on the extinction of dinosaurs
TRUE -Verbs with infinitives ending in –ir form a third group of regular verbs, often called third conjugation verbs. To form the present tense conjugations of these verbs, drop the –ir from the infinitive and add the third conjugation endings (-o, -es, -e, -imos, -en) to the resulting stem.
Christmas is the 25th of November
Te high temperature is 20 degrees. The low is 0 degrees.
