－Last month Shirley advised her father to buy her brother MP4 as a birthday present. － use

问题补充：

－Last month Shirley advised her father to buy her brother MP4 as a birthday present.

－ useful advice it was!

A. a; How

B. an; What a

C. an; What

D. /; How an

答案：

A. a; How

B. an; What a

(答案→)C. an; What

D. /; How an

解析：MP4的第一因素是元音音素故用不定冠词an. 以what引导的感叹句的基本句型结构为what a/an +adj+可数名词单数+主语+谓语！；what+adj+可数名词的复数/不可数名词+主语+谓语！以how引导的感叹句的基本句型结构为how+adj/adv+主语+谓语！