Here are the sentences with the mistakes corrected:

1. Minh isn’t listening to music, **is he**?
2. He couldn’t do her a favour, **could he**?
3. I’m late to this meeting, **am I**?
4. Let’s go out for a walk, **shall we**?
5. Turn off the fans before going out, **will you**?
6. Don’t forget to repair this car, **will you**?
7. That is his cat, **isn’t it**?
8. Na should pass her test tomorrow, **shouldn’t she**?
9. Read my book, **will you**?
10. After it gets dark, they should leave soon, **shouldn’t they**?

### Corrections Summary:
1. "isn't he" to "is he"
2. "couldn't he" to "could he"
3. "am not I" to "am I"
4. "will we" to "shall we"
5. No correction needed
6. No correction needed
7. "is it" to "isn't it"
8. "should she" to "shouldn't she"
9. No correction needed
10. "should they" to "shouldn't they"

Note: The corrections involve changing the tags to their correct forms to match the statements properly.