—What a nice watch it is! —Yes. It’s one of all. A. expensive B. more expensive C. the mo

问题补充：

—What a nice watch it is! —Yes. It’s one of all.

A. expensive

B. more expensive

C. the most expensive

D. much more expensive

答案：

A. expensive

B. more expensive

(答案→)C. the most expensive

D. much more expensive

解析：句意：多么好的手表啊！——是的，这是所有手表中最贵的一个。结合语境可知本句表示在多个中进行对比，故用形容词的最高级，选C。