himself clearly, he raised his voice.
A. So as to make; heard
B. In order to make; hear
C. To make; heard
D. In order that make; hear
网友回答
A. So as to make; heard
B. In order to make; hear
(答案→)C. To make; heard
D. In order that make; hear
解析：考查目的状语和过去分词做宾语补足语，in order to/ to do和so as to都是为了，后面都是动词，但so as to不能放在句首，in order that后面接从句，第二空考查hear oneself heard使自己被听见，句意：为了使自己被听见，他提高了嗓音。选C。