I would choose the last choice, D. Adverbial.
Adverbial phrases include two or more words that serve as adverbs. So "in an hour or two" can be classified as an adverb phrase.
Answer:
D.
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Explanation:
I just took the test and got it right!!
Some five things you should not do is stutter, talk quietly, you shouldn't mumble, look away when talking, and not make sense
Must, could, must, must, have, must, have, been, should, have, must
The answer is (C). Creating an outline is a useful tip in the prewriting stage.