instruction: Is the next sentence syntactically and semantically acceptable?

Bill is drying a lot of clothes on the line.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

You shouldn't play with rifles because to is dangerous.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I want the fact that Bill left to remain a secret.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I was hunting.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable