what 和thatFirms that use computers have found that the numbe
what 和that
Firms that use computers have found that the number of staff ______ is needed for quality control can be substantially reduced.
[A] whose [B] as [C] what [D] that
为什么选that?不用what的理由是什么?
Firms that use computers have found that the number of staff ______ is needed for quality control can be substantially reduced.
[A] whose [B] as [C] what [D] that
为什么选that?不用what的理由是什么?
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