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题库 / OG2016V-SC-17
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.
the frequency of inventory turnovers can be
the frequency of inventory turnovers is often
the frequency with which the inventory turns over is often
how frequently is the inventory turned over are often
how frequently the inventory turns over can be
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老师，D为什么错了？
应该用陈述语序，即：how frequently the inventory is turned over
那老师请问如果平行，左右语序也要平行一致嘛？
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