You look so worried, what’s wrong—More and more people like me become to worry aboutthe __________ pollution after the haze (雾霾)appeared in Beijing and some other cities in China.

The soldier raised his gun and calmly ______ it at the enemy commander,fired.[ ]

y have missed the train, ______ she won’t arrivefor another hour.

下列各句中，没有语病的一句是

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