Final answer:
Adding a comma can correct the sentence's structure.
Explanation:
One way to correct the sentence 'I love commercials about movies I think they're good previews' is by adding a comma after 'movies'. The corrected sentence would be: 'I love commercials about movies, I think they're good previews.'
Learn more about Punctuation correction here:
https://brainly.com/question/31188259
