instruction: Is the next sentence syntactically and semantically acceptable?

The president could not approve the bill, couldn't he?

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

John perfectly rolled the ball down the hill.

response: unacceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Frank has drunk too much.

response: acceptable

instruction: Is the next sentence syntactically and semantically acceptable?

Some people go by car, but others by bike.

response:
acceptable