himself clearly he raised his voice.A. So as to make; heardB. In order to make; hear C.

问题补充：

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

答案：

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。