Is the following sentence linguistically acceptable?
John knows whether she will come back.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
John is tough to persuade.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
Having read Shakespeare satisfied me
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
We know the defendants seem eager to testify against the criminal.
OPTIONS:
- unacceptable
- acceptable
acceptable