The answer would be “La clase es muy interesante”. Está (estar) is typically used when something is not permanent but, in this sentence you are trying to say that the class is interesting in general meaning all the time therefore you would use ser to show the permanece of the fact that the class is interesting.
The best verb to complete the sentence would be "Saldremos" which basically means "we leave".
Answer:
Ella/Él es un/una extraterrestre y quiere apoderarse del mundo.
Explanation:
She/He is an alien and wants to take over the world.
Do you need help filling in the blanks? I just submitted this assessment for FLVS ;)