When you preview something, you inspect it. Previewing helps you get a glimpse of what's ahead before you read or something, kind of like skimming.
Answer:
I think the answer is friends support each other despite their differences because the other answers don't make much sense to me.
Umm... not quite sure what you're looking for... but a theme of <em>To Kill A Mockingbird</em> is racial prejudice because the whole reason Tom lost his case is the fact that he was a black man; it was open-and-shut really.
A. Helping verb, it describes the subject as it renames.
