Q: Valid English sentence (grammatically) or not: Paul had an affair
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: All the boys should could go
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: I put a book on it.
OPTIONS:
- unacceptable
- acceptable

A:
acceptable