Answer:
My familia y yo fuimos de vacaciones, pero "hacía" mucho calor.
My familia y yo fuimos de vacaciones, pero el tiempo "estaba"muy caluroso.
Explanation:
You can use any of thw options I wrote for you.
I'm mexican so I know this stuff.
Estamos: we are
estas: you are
estan: they are
The question says where are Maria and Adela? You should change “Maria and Adela” to they, do the third option is correct.