阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号为l6-25的相应位置上。
I was always told that the three Ps, patience, positive thinking and perseverance, were a sure path ______success.But this advice does not always work as planned. My high school maths exam is one example. The exam, ______was originally to be held in our classroom,
_______(change) to the library at the last minute. This, ______, didn’t bother me because maths had always been my strongest subject. I patiently walked to the library, took my seat and did some deep breathing to help relax ____. But my mood changed quickly when I saw the first question. I had no idea how to do it. I tried to stay _______(positive) and persevered ______I finally found the solution. With the problem _______(solve),I felt proud of my achievement. ________(fortunate),I then noticed that I had just 10 minutes left ______ (complete) the rest.