题目内容
【题目】My grandma got lost in the street and she went back in a police car. _________ policemen she met!
A. How helpful B. What helpful C. What a helpful D. How a helpful
【答案】B
【解析】句意:我的祖母在大街上迷路了,她坐警车回来的。她遇到了一个多么乐于助人的警察啊!修饰单数名词policeman的感叹句,用what a+形容词,故选B。
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