It seems like you're presenting variations of a sentence about a dress. Here’s a breakdown of the responses based on punctuation and hyphenation:
- "She wore a light-blue dress." - Correct usage of hyphenation. "Light-blue" is a compound adjective modifying "dress."
- "She wore a light-blue dress." - Same as above. Correct usage.
- "She wore a light blue-dress." - Incorrect. "Blue-dress" should not be hyphenated as you’re describing the kind of dress.
- "She wore a light blue-dress." - Same issue as above.
- "She wore a light blue dress." - Correct. "Light" and "blue" are separate adjectives modifying "dress."
- "She wore a light blue dress." - Same as above.
- "She wore a light-blue-dress." - Incorrect. As before, "light-blue" should not modify "dress" in a hyphenated form.
To summarize, the first, second, fifth, and sixth sentences are correct. The others contain hyphenation errors.