问题补充：
to improve our English?
A. What do you think we should do
B. Do you think what do we should
C. What do you think should we do
D. Do you think what should we do
答案：
(答案→)A. What do you think we should do
B. Do you think what do we should
C. What do you think should we do
D. Do you think what should we do
解析：do you think作为插入语，放在特殊疑问词之后，故选答案为A
