At the opening________of the school, our headmaster gave a short speech.

 I know that it will be difficult to pick him out in such a crowd, but if you ________ happen to see him, give him this packet.

Young students are ______ not to smoke, either in or out of school. 

 ______ the works of Leonardo da Vinci, the Louvre Museum has more than 6,000 other European paintings, ranging from the13th century to the 19th century.

Programs such as Chinese Idol, and The voice of China, which are        from US and UK Shows, have been making the headlines these months.