----Why do you speak in a loud voice?----Because I want to make myself clearly. A. such;

问题补充：

----Why do you speak in a loud voice?

----Because I want to make myself clearly.

A. such; hear

B. so; heard

C. such; heard

D. so; hear

答案：

A. such; hear

B. so; heard

(答案→)C. such; heard

D. so; hear

解析：such修饰名词，其后紧跟冠词；过去分词作宾语补足语，和宾语myself存在被动关系。