2014年8月16日至28日,第二届夏季青年奥林匹克运动会在南京举行。本届青奥会,既是一次人类体育活动的盛大节日,也是一场精彩、和谐的文化和文明的盛宴,从文化小屋、歌舞派对、到明城墙探险、体育实验室……累计4000多场次的文化交流活动展示了各个国家和民族的风土人情。对待外来文化,我们的正确态度是( )
Young students are ______ not to smoke, either in or out of school.
The reason he was absent from class was his mother fell ill this morning.
The leader of the factory told us that very little ______ was made of the waste material in the past.
_____ of the students who took part in the military training is 450.
—How many times have you been to China? —In fact, it is the first time that I__________ here.