expensive mobile phone it is?---Yes but I think style is quite fashionable.A. What a

问题补充：

--- expensive mobile phone it is?

---Yes, but I think style is quite fashionable.

A. What a；a

B. How；the

C. What an; the

D. How an; the

答案：

A. What a；a

B. How；the

(答案→)C. What an; the

D. How an; the

解析：感叹句主要有what和how构成：

1、what修饰名词或名词短语，有以下两种形式： 1. What+a(an)+（形容词）+单数可数名词+主语+谓语！或是：What+名词词组+主语+谓语！ 2. What+(形容词）+可数名词复数或不可数名词+主语+谓语！

2、How引导的感叹句。 how用来修饰形容词、副词或动词。其结构是：How+形容词（副词）+主语+谓语！

上文expensive mobile phone中心词是mobile phone可数名词单数,expensive词首音素是元音,故用what an. 下文特指上文提到的手机的款式,故选C.