<p>The exchange between the teacher and the student promotes learning far different from that which results as the student listens but does not participate.</p>
<p>The answer is "as." </p>
<p>I know why it's wrong, but I don't get what could be substituted for it.</p>
<p>It's from pg. 603 in test #4 of the blue book.</p>
<p>when.........?</p>
<p>Online Course says this: </p>
<p>Corrected Sentence: The exchange between the teacher and the student promotes learning far different from that which results when the student listens but does not participate.</p>
<p>Explanation for Correct Answer C : </p>
<p>The error in this sentence occurs at (C), where an improper connective is used. The conjunction “as” is used to indicate duration where the subordinate conjunction “when” is more idiomatic.</p>
<p>edit: Nevermind. That sounds right..</p>
<p>yeah, it should be when,</p>
<p>when ________</p>