Hi how do you say hi and goodbye in Spanish ???

¿qué fecha es el día del año nuevo?

Los edificios coloniales estén bien conservados en buenos aires. a. es bueno que b. es triste que c. es peor que d. es injusto que

Ithink this is wrong. someone check this . i retook this and it said i was wrong i think. also this is not an exam since is deleting “dishonest” pictures. it’s homework. but i still want a correct answer pls.