Q: Valid English sentence (grammatically) or not: Bill has been dancing.
OPTIONS:
- unacceptable
- acceptable

A: acceptable

Q: Valid English sentence (grammatically) or not: Headway was unmade.
OPTIONS:
- unacceptable
- acceptable

A: unacceptable

Q: Valid English sentence (grammatically) or not: John asked whether Bill left.
OPTIONS:
- unacceptable
- acceptable

A:
acceptable