题目类型：
单选题
题目内容
The boss refused to sell the car for ________ he thought was not satisfactory.
正确答案
D
题目解析
考查宾语从句的连接词。此处he thought为插入语，what作宾语从句的主语。句意：那位老板拒绝以不满意的价钱买车。