Answer:
9. Sentence fragment: Since you don't have it.
10. Run-on sentence: Please help me wash him, he's dirty.
11. Run-on sentence: I hope you like watching baseball, I really love it.
Explanation:
9. This sentence is incomplete; what is "it"? It is technically grammatically incorrect to begin a sentence with a conjunction, such as the words because, since, as, and many more. This sentence does not have a definite subject, but it has a verb, "it".
10. This sentence is composed of two clauses; although they are both related, it is a run-on sentence, since the second clause refers to the first without the use of a word such as "and". The comma could also be replaced with a semicolon or a period.
11. Once again, the second clause within this sentence refers to the first one and has incorrect punctuation.
I hope this helped! If it is still unclear, do visit this/these website(s) about run-on sentences:
http://guidetogrammar.org/grammar/runons.htm
http://www.butte.edu/departments/cas/tipsheets/grammar/run_ons.html
