He spoke in such a low voice that it was impossible to make out exactly ___ he was trying to say. [ ]

A. it was what that

B. what was it that

C. that what it was

D. what it was that

念珠菌性口炎临床上可分为以下哪三型（）。

A.急性假膜型、急性红斑型、萎缩型

B.慢性肥厚型、急性红斑型、溃疡型

C.急性假膜型、急性红斑型、充血型

D.急性假膜型、急性红斑型、坏死型

E.急性假膜型、急性红斑型、慢性肥厚型