分析下这个选择题,题目为---------be sent for immediately

分析下这个选择题,题目为---------be sent for immediately
--------be sent for immediately
A.do you think which doctor should
B.which doctor do you suggest
C.which doctor do you think that shiould
D.do you suggest which doctor that should
B,帮我详细分析下吧
do you think /suggest 也可以+should do 而且也可以引导问句吧，是不是do you think /suggest引导的是一般疑问句啊，也是可以吗