Determine whether the bold word is a preposition or an adverb. Remember: prepositions need an object. Adverbs modify verbs.

1. Take your keys off the counter.

   1.   ?    preposition
   2.   ?    adverb

2. Phoebe sent the letter off; it is too late.

   1.   ?    preposition
   2.   ?    adverb

3. Below the water, there are many dangers.

   1.   ?    preposition
   2.   ?    adverb

4. The children walked through the shopping mall.

   1.   ?    preposition
   2.   ?    adverb

5. The security guards would not allow Mike through.

   1.   ?    preposition
   2.   ?    adverb

6. Turn the television on so that we can see the news.

   1.   ?    preposition
   2.   ?    adverb

7. The soldiers got on the plane.

   1.   ?    preposition
   2.   ?    adverb

8. The athletes ran outside.

   1.   ?    preposition
   2.   ?    adverb

9. There was a fight outside Mr. Smith's classroom.

   1.   ?    preposition
   2.   ?    adverb

10. Throughout high school, there are many opportunities to do volunteer work.

    1.   ?    preposition
    2.   ?    adverb