6. He did some house chores.
T, He had cleaned his room every day.

7. He helped his mom.
T, He had even run errands for his mom many times.

8. His parents went on a trip with Stephen.
F, Before Stephen could ask for money for his trip, his parents flew to Europe for their anniversary.

9. It was Liam's birthday.
Maybe, It seemed like his birthday because he had planned to have the party, had already invited his friends and relatives.

10. He expected many visitors.
T, He had already invited his friends and relatives.

11. He did a lot of preparations for the party
T, He had cleaned and decorated his place and had even ordered lots of food and drinks for his visitors.

12. Liam was sad that he was sick.
T, He was really disappointed.