Is the following sentence linguistically acceptable?
This is the book which I need to read.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
Brian was wiping.
OPTIONS:
- unacceptable
- acceptable

acceptable

Is the following sentence linguistically acceptable?
Who did that Plato loved seem to be known by everyone.
OPTIONS:
- unacceptable
- acceptable

unacceptable

Is the following sentence linguistically acceptable?
Calvin has dated every girl who Jeff has.
OPTIONS:
- unacceptable
- acceptable
acceptable