How would you say, "We have studied for more than three hours" in Spanish

Can you me with this spanish worksheet

Aspanish conversation is below which answer matches the question? ¿de qué color es la sal? a. es blanca. b. es verde. c. es amarilla. d. es roja. who ever answers with the right answer first i will give brainlest answer.

Hola, mario: yo (1) (estar) en la universidad. la clase de anatomía (2) (ser) de cinco a siete. mi hermano y su esposa (3) (venir) a cenar esta noche. a las siete (yo) (4) (blank) (correr) al supermercado (grocery store). tú (5) (blank) (tener) que regresar a casa antes de las siete. hasta pronto. gracias, valeria