<p>The derelict old house (across from) the warehouses and the (even more) decrepit one (just beside) them have been placed on the list of historic landmarks. (No error)</p>
<p>Why the heck is A not the correct answer? </p>
<p>Isn't the use of "from" unnecessary? </p>
<p>The house ACROSS the warehouses. = The house ACROSS FROM the warehouses.</p>
<p>Gah.</p>