These are the correct changes made in the sentences <em>according to what was required </em>for each one:
1. "I appreciate this <em>(the honor)</em> immensely, but I cannot accept it".
2. "All of the Northern states <em>(states north of the Mason-Dixon line)</em> passed laws that would gradually abolish slavery".
3. "<em>My</em> favorite place to eat is <em>Opas Greek café</em>".
4. "<em>Because I</em> study hard<em>, I </em>feel good about my schoolwork".
5. "By walking, begging rides both in wagons and in cars, <em>(...)</em> I reached the city of Richmond, Virginia, about eighty-two miles from Hampton. When I reached there, <em>(...)</em> it was late in the night. I had never been in a large city, and this rather added to my misery".
6. Your son thinks that no one has noticed him. The antecedent to which the pronoun in bold refers to: <em>"your son"</em>.
7. The newspaper movie critic went on to say about the leading actor<em>:</em> "Everyone who has watched him <em>(Sidney Poitier)</em> is impressed with his talent".
