中文谷We’ve worked out a method
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问题详情：
We’ve worked out a method ____ our production can be greatly raised.
A. that B. what C. of which D. by which
【回答】
D
知识点：定语从句
题型：选择题
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问题详情：
We’ve worked out a method ____ our production can be greatly raised.
A. that B. what C. of which D. by which
【回答】
D
知识点：定语从句
题型：选择题
