口语运用．从方框中选出最佳选项完成下面的对话．A：Hello-优题课

I was feeling a little sad because my mother had lost her job．One day，while I （81）　　（walk） on the street，I heard that a beautiful piece piano music （82）　　（play） above the noise of the people．I walked more slowly （83）　　（find） out where it was coming from．Then I saw a young lady sitting at a piano．

She was singing songs about love，believing yourself and keeping on 84　　（try）．The way she was singing made me （85）　　（relax）．I stood there quietly，watching her playing on such a crowded New York square．I thought that she must be brave enough to perform in front of so many people．

She noticed me．I walked over and （86）　　（tell） her how good her music sounded．"Thank you．"she said．"I have been going through a hard time recently，but you've made me hopeful again．"I said to her．

"I'm glad that I could help，"she replied，"Why are you so sad？"

"Well，my mom （87）　　（lose） her job，and I'm not sure what to do …"

"Did you noticed the way you were walking？Your head was down．"she said．"（88）　　（not be） upset，because opportunity comes in different ways and if your head is down，you might not see it．You （89）　　（smile） more…lift your head up．"

I looked at her，amazed at how she was encouraging me．"Why （90）　　 you　　（play） the piano here？"I asked her with a smile．

She explained that she saw a lot of unhappy people in the world and she tried to cheer them up by playing music．

I smiled a little wilder，realizing that no difficulties could stop me from going on．

The Belt and Road is　　（机会） to help some countries to develop，so more and more countries want to catch it．

The Chinese national badminton team　　（打败） the Japanese team 3﹣2 in Australia on May 27．

If the temperature drops　　（低于） zero degree，water will turn into ice．

My chemistry teacher isn't tall and short．He's of medium　　（身高）．