Spanish ii grammar ?

fill in the blank with the most appropriate answer.

tres horas que tengo que estar en el trabajo.
a. desde
b. hace
c. desde que
d. que

(i think the answer is b, but my second guess is a; c and d, i'm sure, are wrong)

In the diagram, which must be true for point d to be anorthocenter? o be, cf, and ag are angle bisectors.be 1 ac, ag 1 bc, and cf 1 ab.be bisects ac, cf bisects ab, and ag bisects bc.be is a perpendicular bisector of ac, cf is aperpendicular bisector of ab, and ag is a perpendicularbisector of bc.

Choose the pronoun that would correctly replace the following subject and type it in the space provided. a guy in your class a0

Te gustaban los deportes, eras extrovertido(a). eras cómico(a) eras atlético eras romántico(a). eras intelectual.