IV
1. so --> too
2. regular --> regularly
3. niece --> nephew
4. will --> won't
5. that --> those
6. will have been --> is

7. ways --> way
8. inviting --> invite
9. nowhere --> anywhere
10. gave ro --> gave
11. a --> an
12. enough easy --> easy enough
13. by --> on
14. is --> are
15. interest --> interested

IV
1. so --> too
2. regular --> regularly
3. niece --> nephew
4. will --> won't
5. that --> those
6. will have been --> is
7. ways --> way
8. inviting --> invite
9. nowhere --> anywhere
10. gave ro --> gave
11. a --> an
12. enough easy --> easy enough
13. by --> on
14. is --> are
15. interest --> interested