Is the following sentence linguistically acceptable?
Heidi thinks that she has won.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
The more carefully he words the letter the safer he'll be.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
The car will have been being driven.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
They know if Mary won.
OPTIONS:
- unacceptable
- acceptable


acceptable