. Although most of them have no doubt he will pass the exam , I still wonder he has real

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A. whether; that
(答案→)B. that; whether
C. that; that
D. whether; whether
解析：考查固定用法。doubt用于肯定句时用whether引导同位语从句；用于否定句时，用that引导。wonder  if/whether……想知道是否……wonder that 想知道。句意：尽管他们大部分不怀疑他能否通过考试。我还是想知道他是否已经做好准备。结合语境可知选B。