good advice he gave us! A. How a B. What a C. How D. What

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A. How a
B. What a
C. How
(答案→)D. What
解析：句意:他给的多么好的建议啊！这里是感叹句，被感叹的是名词advice，故用what，又因为advice是不可数名词，What+a(an)+（形容词）+单数可数名词+主语+谓语！或What+(形容词）+可数名词复数或不可数名词+主语+谓语！故选D。how用来感叹形容词和副词。How+形容词（副词）+主语+谓语！