This afternoon Ryan and Lucas do their homework (做作业) in Tony's house. At five, Tony and Ryan go and play baseball. Lucas can' play it. He doesn't go with them. He sees some things on the desk. "Let me tidy it up (整理)," Lucas says. "The black pencil and the yellow eraser are Tony's," he says and puts them in Tony's schoolbag. Then he puts the green pencil and the purple ruler in Ryan's schoolbag.
At six, Tony and Ryan come back (回来)
"Where (在哪儿) is my green pencil?" Tony asks.
"It's in my schoolbag. Is my black pencil in your bag?" Ryan says.
"Yes, it is. And your yellow eraser is in my schoolbag too," says Tony.
"I'm sorry, boys," Lucas says.
"That's all right, Lucas. We should thank you. Next time we will tidy up the desk," Tony says.
