— handsome boy he is!—Yes you are right.A. What a B. How a C. What

问题补充：

— handsome boy he is!

—Yes, you are right.

A. What a B. How a C. What

答案：

解析：本题是感叹句，修饰的单词是名词，通常用what来引导；boy是可数名词男孩的意思，所以需加冠词，handsome的首音素是辅音音素故用不定冠词a； how后跟形容词或副词，与本题不符，故本题选A。