阅读下面短文，掌握大意，然后从A、B、C、D四个选项中选出最佳选项。
One day in the 1 class everyone is busy drawing pictures, but Xiao Ming is doing 2. When the bell rings for break（课间休息）, Xiao Ming gives his 3 to the teacher.
The teacher looks at it and gets 4. "Why do you give me a piece of paper with nothing on it, Xiao Ming?" 5 the teacher.
"I'm sorry, sir," says Xiao Ming. "I 6 a dog and some 7 on the paper."
"Where's the dog and where's the bread?" asks the teacher.
"I draw the bread 8. When I finish drawing the dog, he9 the bread. When I give it to you, he 10 away," Xiao Ming answers.
