Add introductory commas where they are needed in the following sentences. Can you identify whether the introductory element, if any, is a clause, phrase, or word? If it is a phrase, what kind of phrase is it?

____ 1. To give Jane a good look at the university Mr. Benson drove up for the Day on Campus.

____ 2. Since the dog had started to run a way to catch him had to be found.

____ 3. Of course the movie that I had rushed to see didn't start on time.

____ 4. Her secondhand car was in excellent condition when she bought it.

____ 5. As I mentioned the rules can be broken occasionally.

____ 6. Having decided to eat only natural foods he had to give up all of his favorite junk food snacks.

____ 7. To estimate the costs he consulted a repairman by phone.

____ 8. To succeed in politics is not necessarily desirable.

____ 9. Making up his mind quickly Jared ordered lasagna while we were still reading the menu.

____ 10. However he tried to use the bottle opener it wouldn't work.