Well, there are actually quite a few but the most popular is a gloomy, decaying setting such as castles or haunted houses.
"I felt much better" is the one sentence among the following choices given in the question that <span>has a subject complement.</span>
Answer:
Once in a blue moon.
Explanation:
This idiom mean very rarely. For example, a Hailey's comet comes once in a blue moon. It comes every 76 years. Which is very rarely.
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