Inrecentyears,sandstorms
问题详情:Inrecentyears,sandstorms___41___(occur)inChinafrequently,especiallyinnorthwesternareas,___42___severeinfluencehascausedwideconcerninChina.There'reseveralreasonsfortofall,peoplearecuttingdownt...
问题详情:Inrecentyears,sandstorms___41___(occur)inChinafrequently,especiallyinnorthwesternareas,___42___severeinfluencehascausedwideconcerninChina.There'reseveralreasonsfortofall,peoplearecuttingdownt...