Sentence: How happy has John been?
OPTIONS:
- unacceptable
- acceptable

Linguistic integrity: acceptable

Sentence: Burn letters to Peter!
OPTIONS:
- unacceptable
- acceptable

Linguistic integrity: acceptable

Sentence: That the march should go ahead and that it should be cancelled have been argued by different people at different times.
OPTIONS:
- unacceptable
- acceptable
Linguistic integrity: acceptable