4 is A because of ir → vaya; vayan to go → (you, formal) go; (you, pl.) go
5 is C because of ser → sea; sean to be (permanent characteristics or qualities) → (you, formal) be; (you, pl.) be
I got this straight from my notes,
I hope it helps
Answer:
It is an Olympic sport so true
Es A) porque come es el verbo correcto al describir la mujer o niña y el verbo como se refiere a ti o yo.