No es cierto que Sara invite<span> a Juan a su fiesta</span>
(Ellos) Acabaron de escribir la carta.
You can omit "ellos" if needed
The answer is c. We always used to study before the tests. ( la respuesta es c.) hope I helped :) btw I know it’s right :D
I believe the answer would be lloviznando, because it makes the most sense.