instruction: Is the next sentence syntactically and semantically acceptable?

It was then that he felt a sharp pain.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

She knocked herself on the head with a zucchini.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Never have I been spoken to so rudely!
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

I'm going to ask Bill to make the old geezer take up these points later.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable