观察右边一组单项式：x，-3x²，9x³，-27x⁴，…

根据上下文意思，用所给单词的恰当形式完成下列短文。

      Have you ever tried to dub (为……配音) an English film? It____ (be) very interesting! I____ (join) in a film dubbing competition at our school last week. It was difficult for me because my spoken English is not so good. But I still decided to have a try. First, I chose my favourite part of a movie. I tried my best to follow the characters’ pronunciation. When I showed my work to my____(classmate) in this competition, to my surprise, they were proud of me! I love such interesting competitions. They not only build my self-confidence (自信) but also improve my spoken English.

         Now, everyone____(practice) English like me. We hope we____ (have) chances to join more and more competitions in the future.

节衣缩食   为富不人    如数奉还   万簌俱寂

辗转反侧   情郁于衷    祸不单行   故弄悬虚