Such good use has been his spare time his English has improved a lot.
A. made in; that
B. made of; which
C. made of; that
D. made out; as
网友回答
A. made in; that
B. made of; which
(答案→)C. made of; that
D. made out; as
解析：考查such---that句型及make use of 短语的变化。要分析句子结构，按照句意来做。