Run on sentence. A comma splice is a sentence that uses a comma when it should instead be either a colon, semicolon, or conjunction, and there is no comma so that is wrong. There should also be a period between bed and he. Here is what the complete senctwnces would look like: My dog sleeps beside my bed. He wakes me up in the middle of the night to let him out.
It should be D! It was a friendly letter talking about how she had won the contest!
I hope all is well, and you pass! (: Good luck, rockstar! (:
