Answer:
Identify the mistake?
Explanation:
1. run-on
2. comma splice. It should be a period not a comma.
3. novel, then. There should be a period not comma
4. correct sentence
5. This one is kind of tricky, but I would suggest "correct sentence."
Answer:
The author's use of "No matter" implies his optimism involving the removal of the stain.
Explanation:
I don't have your passage, so I can't give you a full answer. However, the term "no matter" suggests that no matter what it takes, the stain will be removed.
