摘要：30．With more forests being destroyed.huge quantities of good earth each year. A．is washing away B．is being washed away C．are washing away D．are being washed away [解析] 该题考查主谓一致与动词的语态.根据quantity的用法.quantities of+复数名词.a quantity of+单数名词.故排除A.B项,土壤是被冲走的.用被动语态.故选择D.句意为:因为更多的森林在被破坏.每年都有大量的沃土被冲走. [答案] D
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With more forests being destroyed，huge quantities of good earth ________ each year.
| A．is washing away | B．is being washed away |
| C．are washing away | D．are being washed away |