instruction: Is the next sentence syntactically and semantically acceptable?

Sorry, I gave last week.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John hummed, and Mary sang, the same tune.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

The exterminator killed the insects with DDT.
OPTIONS:
- unacceptable
- acceptable

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

You have presented so elegant a solution that we can only admire it.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable