Es variable en género y número por concordancia; sólo es invariable cuando va con el auxiliar haber

Hello darlings! could anyone explain to me what exactly this means? i can't understand exactly what my school is asking of me oof i've read the lesson over and over and i'm still confused. create your own nontraditional artwork. you might choose installation art, environmental art, or use an unconventional medium.

Prairie houses a. irregular in plan, two stories high, with one-story wings b. irregular in plan, one story high, with two-story wings c. irregular in plan, two stories high , with two- story wings d. irregular in plan, one story high, with one-story wings

What year was the original wizard of oz movie released?