g was under an “orange” smog alert on Feb. 24, which marks the first time the second-highest warning level of a new system introduced last year________.

Zhang Lei won “The Voice of China” 2015 season at the Bird Nest in Beijing on Oct 7, 2015, with years of experience ________ him.

f the city , which provides a lot of job opportunities for the local people.

Is there anything else ____ you want to get ready for the party this evening?

Remember to the lights after school.