有个小疑问:
It is well known in the supermarket industry that how items are placed on shelves and the frequency of inventory turnovers can be crucial to profits.
平行结构,所以正确的应该是:E. how frequently the inventory turns over can be. 答案显而易见~
选项B. the frequency of inventory turnovers is often 我们不管它是否和前面平行,单看它的主谓语一致。为什么is不对呢? frequency不是单数吗?
求教!!谢谢!
什么意思?我还是不理解。
ls的能不能举个例子?谢谢!
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