question: 15 what is next? should we sin because we are not under the law, but under grace? let it not be so!
Capitalize this past sentence correctly.
A: 15 What is next? Should we sin because we are not under the law, but under grace? Let it not be so!

question: plants become a mirror of the energy present in a room, for better or for worse.
Capitalize this past sentence correctly.
A: Plants become a mirror of the energy present in a room, for better or for worse.

question: i had left church and sunday school when i was eighteen.
Capitalize this past sentence correctly.
A: I had left church and Sunday school when I was eighteen.