Their lives were frequently______(threat) by earthquakes and volcanoes.
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This idiomatic______(express) seems out of style. today. We seldom use it.
The final exams are around the comer; she rarely goes anywhere ______ (除了去学校图书馆).
to tell the future weather
北京市轨道交通在上下班高峰期运力不足,政府由此采取高峰浮动票价,请问你怎么看?