Is the following sentence linguistically acceptable?
I gave the box to Leah.

acceptable

Is the following sentence linguistically acceptable?
To which city and which conference did Bill go to?

unacceptable

Is the following sentence linguistically acceptable?
I've got to try and I've got to find that screw.

acceptable

Is the following sentence linguistically acceptable?
Either Professor Swansong or the graduate students are going to proctor the exam.
acceptable