1·Print out a flag of many national flags, burn it.
打印一张万国国旗，烧掉它。
2·People hang national flags outside the door on National Day.
在国庆节那一天，人们把国旗挂在门外。
3·Before National Day, people are busy with washing national flags.
国庆节前，人们忙着清洗国旗。
4·Red is the color most commonly found in national flags.
红色是国旗最常见的颜色。
5·People hang national flags out on the national Day.
在国庆节那一天，人们把国旗挂在门外。
6·People hang national flags out on important holidays.
在重要的节日，人们把国旗悬挂在门外。
7·The national flags should raised and lowered by hand.
国旗必须用手升降。
8·Know more national flags and share with your classmates.
认识更多国旗并和同学们一起分享。
9·Some birds have been incorporated onto national flags or emblems.
有些鸟还被作为国旗或国徽的组成部分。
10·The national flags of the two countries flew high at the airport.
机场上空中乌两国国旗高高飘扬。