The plane came down later than expected.

15. In this sentence, what part of speech is the word down?
A. Preposition
B. Adjective
C. Adverb
D. Conjunction

I picked C, because the word down modifies the verb came, which makes it an adverb. Is this correct?

18. In which sentence is the underlined word a preposition?

A. She skipped her breakfast, for it was getting late. (the word for is underlined)
B. The Constitution calls for equal rights for all. (the first for is underlined)
C. It was a sunny day, but Jane remained indoors. (the word but is underlined)
D. Senator Young objected to the bill, but he didn't say why. (the word but is underlined)

I picked b, because for has an object, which is equal rights. Am I right or wrong?

20. Which sentence includes a compound-word preposition?

A. Don't come along on my account.
B. The younger boys decided to play tag.
C. The lightning struck from out of the blue.
D. There was no one at home but me.

I picked C, because out of is a compound word preposition. A has a single word preposition, which is on. B has a single word preposition, which is to. D has the word but and it does serve as a single word preposition, since in this sentence but does mean except. Am I thinking about these sentences in the right way?

All are correct! Good thinking! :-)

Thanks!

You're welcome.

rong miss sue good try thought aprol fool early ha ha ha

For question 15, your answer is correct. The word "down" in the sentence "The plane came down later than expected" is an adverb because it modifies the verb "came." It describes the direction and manner of the action.

For question 18, your answer is incorrect. The preposition in that sentence is "for," not "equal." In the sentence "The Constitution calls for equal rights for all," the word "for" is used as a preposition to indicate the purpose or reason for calling. It is followed by the object "equal rights."

For question 20, your answer is incorrect. The correct answer is A. In the sentence "Don't come along on my account," the compound-word preposition is "on my." It functions as a single unit and acts as a preposition describing the location or reason. The other options do not contain compound-word prepositions. Option B has a single-word preposition "to," option C has a simple preposition "from," and option D has a conjunction "but."