I would have to say possibly sorrowful.
The only problem I seen wrong with it was there was one word spelled wrong and that was basis. Other than that, everything looks fine.
Answer:
Before We're and after hide-and-go-seek,.
Explanation:
Eli was speaking to someone, explaining the game they were playing.
The sentence should read: "We're playing hide-and-go-seek," Eli mumbled.
Complete subject: Everyone in the church.
Complete predicate: rushed out.