五歲兒童牙齒不健康的比例高。

　　A high proportion of five-year-olds have teeth in poor condition.

　　他今年第五次舉起了獲勝獎(jiǎng)杯。

　　He lifted the cup for the fifth time this year.

　　所有七、八年級(jí)的學(xué)生均可觀看此劇。

　　The play is open to all seventh and eighth graders.

　　洗洗牌，然后給每人發(fā)七張。

　　Shuffle the cards and deal out seven to each player.