To improve the quality of our products, we asked for suggestions had used the products.
A. whoever
B. who
C. whichever
D. Which
网友回答
(答案→)A. whoever
B. who
C. whichever
D. Which
解析:考查名词性从句。本句结构为ask sb for sth 所以后面从句为宾语从句,从句中缺少had used the products的主语,即使用这个产品的人。故排除CD,根据句意可知,无论是谁使用了产品我们都会向他们寻求建议。故选A