请教verbal分册SC15题~

dreamlollip

verbal 分册15题.
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.
(A) the frequency of inventory turnovers can be

(B) the frequency of inventory turnovers is often

(C) the frequency with which the inventory turns over is often

(D)how frequently is the inventory turned over are often

(E) how frequently the inventory turns over can be

答案是E，疑惑的是D中的除了are often改变了句意之外，是不是把前部分的is位置改一下可以是正确的？变成 how frenquently the inventory is turned over can be
正确答案没有用被动，我感觉应该是要被动的呀... 求解，感激不尽~

kkfrancais

Inventory 是被顾客turn over的，但是，如果用被动语态的话，读上去很awkward。而主动语态要更加合适些。

louisehu

the inventory turns over 表示存货周转。没有被动语态的用法。