She carefully opened the mysterious box.
Meaning: This sentence is about someone being very cautious while opening a box that has unknown contents. It's like saying, She was very cautious when she opened the box because she didn't know what was inside.
Choice of Words: Carefully is an adverb that means with great attention and caution. Opened is a verb that means to make an opening in something. Mysterious is an adjective that describes something unknown or puzzling. Box is a noun that refers to a container with a lid. The sentence describes someone opening a box with caution because its contents are unknown.
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Related Expressions