通读下面短文，掌握其大意，然后在各题所给的四个选项（A、B、C和D）中选出一个最佳选项。

Tim is an English boy. He goes to school with Sam, his1, every day. Tim's mother buys him a white 2. He likes the shirt very much, 3 he always wears(穿) it to school.

One day, the two friends are going to school. Sam asks, "Where is4 white shirt, Tim?" "Oh, it is in my room. I don't want to wear it. "

Sam asks, "5? Tim, your shirt is very 6. "

Tim says, "A button(纽扣) 7 my shirt is lost. I can't 8 the same button. So I don't want to wear that shirt. "

"Why not change(更换) all the buttons on the shirt?" says Sam.

"That sounds9," says Tim. He does this and wears the10 shirt the next day.