<p>Sorry for disturbance everyone, but I had trouble with the following questions:</p>
<p>[The flag is risen each morning over government buildings in Washington.]
B. Each morning the flag is rising over government buildings in Washington.
C. The flag is raised each morning over government buildings in Washington.</p>
<p>Correct: C.</p>
<p>Students in the origami class selected colorful sheets of paper, [creased and folded it carefully, and thus had created] fanciful animal shapes.
B. then creased and folded them carefully to create
E. creased and folded them carefully, thus they created</p>
<ol>
<li><p>This is basically a TOEFL question: do you know the conjugations of “rise”? If so, then you can easily spot that the original uses the pp where it should use the simple past.</p></li>
<li><p>The original has a pronoun error. E is a comma splice (two independent clauses connected with a comma but no FANBOYS coordinating conjunction).</p></li>
</ol>