Answer and Explanation:
It was a rainy day, and I was alone at home, writing a story.
In this sentence, there are a few errors that can be corrected:
1. "raing" should be "rainy" to correctly describe the day as being characterized by rain.
2. There should be a comma after "day" to separate the introductory phrase "It was a rainy day" from the rest of the sentence.
3. "and" should be capitalized since it starts a new independent clause.
4. "I" should be capitalized since it is the beginning of a new sentence.
5. "story writing" should be hyphenated as "story-writing" to function as a compound adjective modifying "day." Alternatively, it can be rephrased as "writing a story."
Corrected sentence:
It was a rainy day, and I was alone at home, writing a story.
In this sentence, the corrected version conveys that it was a rainy day, and the speaker was at home, engaged in the activity of writing a story.