Explain why a subordinate clause cannot stand alone?

Because a subordinate clause depends, structurally, on a main or independent clause. It completes the main structure in a statement.

For example: Judith was answering the question when her boyfriend called.

In this case, ''when her boyfriend called'' is the subordinate clause, because is an action explained as a conjunction from another.

be more specific with your question.

do you know the story wonder?

well on wonder it has different stories from each person and they can all share their thoughts and feeling each not just one. if there was one you would only get to see one persons thoughts and feelings. so do a story point on multiple of the main characters.

hope i !

- lilblakeyout