instruction: Is the next sentence syntactically and semantically acceptable?

I have might be flying helicopters.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Lydia eloped with Wickham yesterday.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John put in the box.
OPTIONS:
- unacceptable
- acceptable

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

This problem, the sooner you solve the more easily you'll satisfy the folks up at corporate headquarters.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable