Sacfa

Run-ons:
10. People already believed the precious metals to be divine so their use in money intensified its allure.
This sentence is correct divine, so divine; so divine their
Although we have connected these two independent clauses with a little conjunction ('so'), we also need a comma to separate these clauses. We never use a semicolon and a little conjunction to connect independent clauses.

4. Marcellino always knew his way around the woods this is something he could always depend on.
This sentence is correct woods; this woods, this woods: this
These clauses are clearly related; the pronoun 'this' connects the two clauses in meaning. However, they are both independent clauses and need to be connected with a comma + a little conjunction or they should be separated with a semicolon.
3. The show begins at 7:30 make sure you're there before 7:15.
This sentence is correct
7:30, make
7:30. Make
7:30; Make
Our second sentence is a directive based on what was said in the first sentence. Although the clauses are closely related, they still must be treated as independent clauses. We could connect them with a comma + so, or we can leave them as two separate sentences.
5. Having prepared himself well for the realtor exams and having exhausted everyone in the family with his requests that someone help him with the true-and-false drills, Jeffrey, who had never been a particularly good student in high school, knew he was ready to take on the greatest challenge of his life.
This sentence is correct drills; Jeffrey
Jeffrey who had never been a particularly good student in high school knew drills: Jeffrey
There is nothing wrong with that sentence as it is written. Remember that length has nothing to do with whether a sentence is a run-on or not.

Punctuation:
1. Coach Espinoza who took her team to the Final Four last year might take a job with Notre Dame.
Espinoza who took her team to the Final Four last year, might
Espinoza, who took her team to the Final Four last year might
Espinoza, who took her team to the Final Four last year, might no punctuation needed
The modifying clause (who took her team to the Final Four this year) is a parenthetical element. It can be removed without changing the essential meaning of the sentence. Such parenthetical elements should be set off by commas. To see if part of a sentence is parenthical, try removing it. If the sentence still makes sense you should probably put commas around that element.
2. The best production facilities are in Atlanta Georgia Boston Massachusetts and Phoenix Arizona. in Atlanta, Georgia, Boston, Massachusetts, and Phoenix, Arizona. in Atlanta, Georgia; Boston, Massachusetts; and Phoenix, Arizona. in Atlanta, Georgia; Boston, Massachusetts and; Phoenix, Arizona. no punctuation needed
Use a semicolon to separate the elements of a "monster list" -- a list in which the elements themselves contain commas.
9. "My Old Kentucky Home a tune by Stephen Foster, is Kentucky's state song.
Home" a tune
Home", a tune
Home," a tune no punctuation needed
In the United States, periods and commas go inside quotation marks. And we need a comma here to set apart a parenthetical element. ("A tune by Stephen Foster" can be removed from the sentence without changing the essential meaning of the sentence.)
Wrong Word
2. ____________ are too many possible answers to this question.
They're
There
Their
7. My mother has been _______________ in bed all morning. lieing laying lying 11. The politicians can't seem to find an appropriate ___________ for the new community college. cite sight site 12. I've never known the library to be _____________ this quiet. quite quiet
quit