I would say horse or letter but i could be wrong
Answer:
Use commas after introductory a) clauses, b) phrases, or c) words that come before the main clause. a. Common starter words for introductory clauses that should be followed by a comma include after, although, as, because, if, since, when, while. While I was eating, the cat scratched at the door.
Answer:
teachers they sometimes help
If I'm not mistaken, its a fused run-on sentence. A comma splice is where there is an unneeded comma, and it isn't a simple as it contains a conjunction.