Point
1.00
Question Text
The cost of living in Ho Chi Minh City has risen so fastly that many people are struggling to keep up.
Quiz Section
Position
2.00
Question Type
Multiple Choice
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Correct sentence:
"The cost of living in Ho Chi Minh City has risen so fast that many people are struggling to keep up."
Explanation:
"Fast" is an irregular adverb—it does not take the -ly ending.
"Fastly" is not a standard English word.
✅ Correct adverb: fast
❌ Incorrect: fastly
Answer: B. fastly is the underlined part that needs correction.