Which expression is a classic example of a formulaic chunk learned as a whole?

• A. Once upon a time
• B. To some extent
• C. In conclusion
• D. On the other hand

Answer: (A)

Memorized fixed expressions are stored and used as single units rather than built piece by piece. "Once upon a time" is a quintessential example: it’s a conventional opening for fairy tales, so learners often memorize the whole sequence and use it exactly as a unit to start a story. It signals a narrative pattern and carries meaning beyond its individual words, making it a classic formulaic chunk. The other phrases are common in writing and speech, but they don’t sit as strongly in language learners’ minds as a fixed storytelling opener, since they’re more flexible in usage and less tied to a single, iconic template.