Q: Valid English sentence (grammatically) or not: Isn't Bill sick?
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: I'll talk to John on Friday about the report that the shooting of the prisoners shocked me, and to his wife on Saturday.
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: I know I bought the book that you recommended.
OPTIONS:
- unacceptable
- acceptable

A:
acceptable