Amusing writing question....help

<p>heyy guys have a look at this
Long A(thought of as) B(a quiet, stuffy place) where C(people) just borrowed books, libraries
D(have been changing) their images dramatically over the last few years. No error</p>

<p>The answer is B i just dont get it</p>

<p>You should use plural in B(quiet, stuffy places)</p>

<p>yea… true didn strike me thanks</p>