<p>How can you be sure when a question is error free?</p>
<p>When A, B, C, and D arent errors. :p</p>
<p>But seriously I dont know what your asking for..</p>
<p>
[quote]
your
[/quote]
</p>
<p>you're*</p>
<p>You usually pick E when you can't find any errors, and you usually go back to check the questions where you put E.</p>
<p>I was lazy:-)</p>
<p>When the sentence makes sense and if there is no need to change anything, E is the answer.</p>
<p>Check A, B, C, D first. If they don't have any errors, then that means the sentence has no error.</p>