问题补充：
done for us?
A. What do you think he has
B. What do you think has he
C. Do you think what has he
D. Do you think what has he
答案：
(答案→)A. What do you think he has
B. What do you think has he
C. Do you think what has he
D. Do you think what has he
解析：句意：你认为他为我们做了什么？正常语序是：Do you think what he has done？但习惯上，把宾语从句的疑问词放在句首，其他不变。故选A。
考点: 考查插入语的用法。
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