7. Which sentence contains italicized words that are used as an infinitive phrase?

A. Tom went there for some flour.
B. Kelly went to the grocery store.
C. Mark wanted to go, but not today.
D. Jane parked her car behind a truck.

These words are italicized.....
A.for some flour
B.to the grocery store
C.to go
D.behind a truck

Study this site and then post your answer.

http://www.chompchomp.com/terms/infinitivephrase.htm

7. C?

You're right. :-)

8. Which of the following is a run-on sentence?

A. We like to take a walk after dinner.
B. The house was owned by the mayor.
C. Karen's uncle arrives tomorrow she wants to see him.
D. Mike joined the army, and he became more disciplined during the training.

C?

Right

9. Which sentence contains repetitious words that should be left out?

A. The star was visible centuries ago.
B. The bright star is visible.
C. The bright star is visible to the eye.
D. The star will soon disappear.

C?

10. In which sentence are the italicized words a dependent clause? (A dependent clause can't stand as a sentence on its own.)

A. The diving board broke when she jumped into the pool.
B. She wanted to leave early, or she wanted to stay overnight.
C. She became angry, but she would not leave without her brother.
D. She went swimming, and her brother went boating.

Italicized words are....

A.when she jumped into the pool
B.she wanted to stay overnight
C.she would not leave without her brother
D.her brother went boating

A?

Yes. 9 and 10 are correct.

Both are correct.

11. How could you combine the following two sentences into a complex sentence with a dependent adjectival clause?

The boy wore a green coat. He carried his sister home.

A. The boy wore a green coat, and he carried his sister home.
B. The boy wore a green coat; he carried his sister home.
C. The boy carried home his sister's green coat.
D. The boy who wore a green coat carried his sister home.

D?