来自富巍的问题
weshouldclean()twicedayAourtoothBourtoothsCteethDourteeth
weshouldclean()twicedayAourtoothBourtoothsCteethDourteeth


weshouldclean()twicedayAourtoothBourtoothsCteethDourteeth
weshouldclean()twicedayAourtoothBourtoothsCteethDourteeth
D
teeth是tooth的复数形式
诚意帮助,祝快乐进步,