问题标题：
【"Withmoreforestsbeingdestroyed,hugequantitiesofgoodearth________eachy""Withmoreforestsbeingdestroyed,hugequantitiesofgoodearth________eachyear．A.iswashingawayB.isbeingwashedawayC.arewashingawayD.arebeingwashedaway"】
问题描述：
"Withmoreforestsbeingdestroyed,hugequantitiesofgoodearth________eachy"
"Withmoreforestsbeingdestroyed,hugequantitiesofgoodearth________eachyear．
A.iswashingaway
B.isbeingwashedaway
C.arewashingaway
D.arebeingwashedaway"
蔡淑琴回答：
答案D此题考查了两个知识点.其一是主谓一致：根据quantity的用法,quantitiesof和aquantityof后面都可加不可数名词与可数名词复数,但它们作主语时,quantitiesof...后面的谓语动词用复数,而aquantityof...的谓语...
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