Answers in bold and underlined.
Answer 1: Ayer yo estudié en la biblioteca hasta las tres.
Translation 1: Yesterday I studied in the library until three.
Answer 2: Después me fui a casa y comí una ensalada y tome un vaso de leche.
Translation 2: Then I went home and ate a salad and had a glass of milk.
Answer 3: Mi compañera de cuarto y yo miramos televisión y después ella llamó por teléfono a sus padres.
Translation 3: My roommate and I watched TV, and then she called her parents on the phone.
Answer 4: Yo escribí unas cartas. Generalmente yo preparo la cena, pero anoche Gloria la preparo porque por fin aprendió a cocinar. Después de cenar, unos amigos llegaron y Gloria hablo con ellos hasta muy tarde, porque a ellos les encanta conversar. Yo fui a la tienda para comprar leche y pan para nuestro desayuno.
Translation 4: I wrote some letters. Usually I make dinner, but last night Gloria made it because she finally learned to cook. After dinner, some friends came over and Gloria talked to them until very late, because they love to talk. I went to the store to buy milk and bread for our breakfast.