<p>Tibet, one of several Asian regions PARTIALLY COVERED BY mountains, CONTAIN, IN ADDITION, fertile areas IN WHICH grains and vegetables grow.</p>
<p>The answer was CONTAIN. just a agreement problem (CONTAINS)</p>
<p>IN WHICH was kind of weird, I thought it would be WHERE. </p>
<p>whats the difference between IN WHICH and WHERE ?</p>
<p>thx. p.s. is princeton review tests easier or harder than bb tests?</p>
<p>Where specifies a location. </p>
<p>In which can also specify a location, but it is more specific than saying where. Note the preposition. Using a preposition + which is more specific than simply saying where.</p>
<p>You can also say on which or by which. The preposition adds detail. </p>
<p>That is the box on which I left my book. (The book is on top of the box).</p>
<p>That is the box by which I left my book. (The book is beside the box).</p>
<p>That is the box in which I left my book. (The book is in the box). </p>
<p>–</p>
<p>I don’t recommend relying on one’s ear. In which is correct, despite how awkward it may sound to you (it sounds OK to me). </p>
<p>Learning the rules is the best way to do well on the grammar questions.</p>