Firms that use computers have found that the number of staff is needed for quality contro

发布时间：2020-08-17 04:05:30

Firms that use puters have found that the number of staff      is needed for quality control can be greatly reduced.
A. whose
B. as
C. what
D. that

网友回答

A. whose
B. as
C. what
(答案→)D. that
解析：通过分析句子结构，可知这个句子中包含一个定语从句。that在定语从句中作主语，故用that。
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