问题
选择题
His parents wanted him to be a doctor, _____ they thought was a steady and well-paid job．
A．who
B．that
C． what
D．which
答案
答案：D
考查非限制性定语从句。先行词为a doctor，they thought做插入语，从句中缺少主语，所以使用关系代词which。
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