REALLY EASY!!
La cena 20 euros.

a.) cuestas
b.) cuesta
c.) cuesto

cuesta

Explanation:

"la cena" is singular and feminine so that means there shouldn't be an "s" at the end and that the last letter should be "a"

well, if he says unos it is 1, if he says dos, it is 2, if he says tres, it is 3, if he says cuatro, it is 4

not sure the question, but this translates to

"as you can see justice and injustice in the novel ¨the suspicious truth¨

i need "

hope that , let me know if you need any more : )