阅读下面短文,从短文后各题所给的 A、B、C、D 四个选项中,选出可以填入空白处的最佳选项。
Mrs. Walker sat down at her desk and sighed, " OK! Tell me, Winston, how your homework became part of the ecosystem!"
" Yesterday, "he began, " after finishing my math homework, I needed a 1 . So I took out my bubble gum(泡泡糖) to 2 —Michael and I are having a contest. "
" Yes, " added Micheal, " we are. "
" I thought the more gum, the bigger the bubble. So I kept 3 gum. Pretty soon, I was blowing bubbles so big that they 4 my face. I blew a bubble as big as a beachball !" Winston curved his arms over his head to show how big it was.
" Wow! It's amazing!" one girl behind him whispered. Some kids murmured in disbelief.
" Then it 5 —suddenly, a strong wind tore the bubble right out of my mouth! The bubble floated over my desk and out the window. As it sailed away, I noticed something yellow 6 to it. Like paper. Then I found my homework was 7 . "
" So?"Mrs. Walker asked.
" I ran after it into Mrs. Roosevelt's garden—she lives next door. I saw her cat attack the bubble. The bubble broke. All I saw then was the cat running 8 away. "
" Mrs. Roosevelt helped me 9 the garden. But my homework was nowhere to be seen!"
Shaking her head, Mrs. Walker said, " 10 , Winston, why didn't you just tell me that the homework was hard and. . . "
Just then, the office assistant walked in with an envelope 11 to Winston.
Everyone watched him open the envelope and take out a wrinkled homework page and a/note that said" For Winston's teacher".
Winston must have wanted to 12 this homework. He's responsible. I have no ident13 his homework got stuck to my cat. But I'm sure Winston can give you a(n) 14 .
Mrs. Roosevelt
Mrs. Walker looked up, " It was all 15 !"
" Yes, madam. "Winston said quietly.