______ useful the information they've given to us is A what B what a C how the D how

问题描述:

______ useful the information they've given to us is
A what B what a C how the D how

D
they've given to us 做定语修饰the information ,省略定语之后,此句变成
How useful the information is!
How+形容词/副词+主语+谓语
What+(a/an)+形容词 +名词+主语+谓语

答案是D。
意思就是:他们给我们的资料有多有用?
望采纳。

D how
what是对名词感叹,how是对形容词感叹

选择D选项