large quantities of earth ________during the flood in this area 英语单选
问题描述：
large quantities of earth ________during the flood in this area 英语单选
a)is washing away b) are washed away
c)has been washed away d)were washed away
答
d)were washed away
large quantities 为复数
during the flood in this area 为过去时可是earth 不是单数么这里按large quantities来定。这样的例子很多，如面包bread不可数，但2片面包(2 slices of bread) 就是复数了。