题目内容
【题目】The old man turned his business over to his younger son, ________made his elder son discouraged.
A. who B. what
C. that D. which
【答案】D
【解析】非限制性定语从句缺少主语，先行词是整个主句，故用which。
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题目内容
【题目】The old man turned his business over to his younger son, ________made his elder son discouraged.
A. who B. what
C. that D. which
【答案】D
【解析】非限制性定语从句缺少主语，先行词是整个主句，故用which。