<p>The experience of taking a car on the road with a driving teacher fosters learning far more useful than that which results as students sit through a dull lecture.</p>
<p>the answer is to change as -> when/while</p>
<p>What's the difference between the meanings of "as" and "when/while" ?
I thought they have the same meaning.</p>
<p>? anyone? </p>
<p>? </p>
<p>In this context, "as" implies that the events are happening at the same time, whereas "when/ while" gives off a sense of contrast or causality (think cause-and-effect.)</p>
<p>nice explanation.</p>
<p>You're tenses aren't parallel right?</p>
<p>tense is not an issue. It's an idiom error I believe.</p>