29 points, Brainliest and Thanks! :)
In each sentence, locate the prepositional phrase. Indicate the word that the prepositional phrase modifies and the part of speech that the word is. Then, state whether the phrase acts in the sentence as an adjective or as an adverb.

10. The classes were all held in the morning.

11. Work began promptly at nine o’clock.

12. The students found the illustrations of the problem interesting and helpful.

13. Teachers located materials on different topics.

14. Classes like these kept the students busy