阅读下面短文，从每题所给的四个选项中，选出最佳答案。     
A

—Must I finish my homework at school?

— No, you_____. you can do it at home

Monday morning is an important time at our school. All of the students go to the playground. We listen to music, and we   1  the national flag go up.
Usually, one student gives a talk on Monday mornings. One Monday last year, a boy gave the talk. He was   2  and excited! When I saw him, I wanted to have a try, too.
Can I really do it?
Last week, our teacher said our class should give the talk. My teacher   3  me, "I know you want to have a try. Next Monday, you can give the talk. Go and write something down.   4  for it, I'm sure you'll do well."
"Thank you," I answered, It was such a great   5  for me! When I got home, I was excited. I wrote two pages for the talk. I read them again and again. When I read, I asked my parents  6 . I wanted to make my teacher happy.
Monday morning came. I began to feel   7 . When did I last give a talk to   8  many people? Never! This was my first time. Could I really   9  it ? Maybe I couldn't finish the talk.
When I got to school, we all went out to playground. I  10 in front of everyone. I opened my mouth, but I couldn't say anything.
"Take it easy," I said to   11 . "Don't be nervous. You can do it."
Just then, I looked down at everyone. I saw about 1,000 eyes. They were all looking at me ! I couldn't   12  stand up.
I looked at their eyes more carefully. Their eyes were saying, "You can do it! Don't be afraid, just talk!"
I   13  a big breath. Then I began to talk. It wasn't hard. It was easy.
I don't know   14  I finished my talk. But I did it. I felt so good that day. I showed myself 15 everyone what I can do.