<p>Question 1.</p>
<p>Why is the answer "to celebrate" and not "for its celebration" besides the fact that the first one is shorter?</p>
<p>The underlined part in parentheses.</p>
<p>When the Berlin Wall, long a symbol of the Cold War, began to be torn down in 1989, five million people went to Berlin (to celebrate that). </p>
<p>Question 2.</p>
<p>Why is this sentence correct as it is. I thought "were" should be changed to "was" because the action is singular, "tapping their last reserves of energy"</p>
<p>Only by tapping their last reserves of energy were the team members able to salvage what was beginning to look like a lost cause.</p>
<p>Thanks for the help.</p>