1. That's not Pam's hat.
2. The witness' appearance shocked the jury.
3. My dad's favorite car is a 65 Chevy.
4. My sister-in-law's daughter got straight As.
5. Kim and Tina's bedroom is being painted.
6. Mr. Jones' father is considered to be a semi-invalid.
7. The well-known actress accepted the award.
8. Cliff Rogers is a self-made millionaire.
9. She will receive a 50 or 75-cent raise.
10. He went to his sister's house.
11. Seventy five people got let go this week.
12. My name is Connie Warner. W-A-R-N-E-R.
13. Where were you on (...)? At home.
14. When did you (...)? On Friday.
15. The children's teacher was ill.
16. The singers' voices are beautiful.
17. True. The sentence is punctuated correctly because it has the hyphen in the adjective well-known, the capital letter at the beginning of the sentence and the stop at the end.
18. Bob's actions were un-American.
19. Jill's brother... He got so tall... Is only ten.
20. True. The sentence is correctly puntuated because it has a capital letter at the beginning, the apostrophe in "who's" and the question mark in the end. But the correct question word is "Whose" not "Who's".
21. True. The sentence is correctly punctuated. It has capitalization at the beginning, the apostrophe showing possession and the final stop.
22. Rod and Tim's cabin was rustic.
23. They took an all-inclusive vacation.
24. Greg's witness was cross-examined.
25. She wanted a five-to-six-page report.