19.閱讀下面短文,根據其內容和所給段落開頭語續寫一段,使之構成一篇完整的短文。 When parents take part in our school events,it is usually embarrassing.A few weeks ago,it was my mom who played the embarrassing parent role. While my mom and I were shopping,we ran into my teacher,who mentioned that the school didn't have a music teacher to help our class put together a performance for Winter Fair.And,right then and there,my mom said, "I know the perfect song-and-dance.I'll teach it to the kids!" Before I could say "Please don't," my mom had agreed to come to my class every morning at 9:30 for a week.Oh,and just to be clear,she is not a professional entertainer at all;my parents run a small grocery store. "Um," I said on our way home, "are you sure this is such a good idea?" "Of course!" she said. "We'll have fun!" "OK,guys," my teacher said at 9:28 on Monday. "We're going to stop silent reading a little early because a special guest is here to help us with a performance for Winter Fair.Let's welcome Arizona's mother." I looked up and discovered my mom standing at the front of the room wearing the world's funniest big hat. "I'm super excited to be here with you!" my mom said. "I'm going to teach you a fun little song-and-dance I learned a few years back,when I did some theater in college.Here it goes!" Oh,please,oh,please,I said over and over in my head,let there be a fire drill,or an urgent meeting,or a power cut,or anything to stop my mom from completely embarrassing herself-and me! But apparently,my mom was not at all concerned about looking silly.She turned on some background music and started singing and dancing away. I closed my eyes,covered my ears,and sank as low as I possibly could in my chair. 注意: 1.續寫詞數為80詞左右; 2.段落開頭句已給出。 After a while,though,I screwed up enough courage to uncover one ear and look through a half-open eye,_________________