高等继续教育 / 统考英语词汇与语法
正确率：统考%
3、They have never heard any _ _ _ _ _ _ _ .
A.a customer complaint
B.the customer's complaints
C.customer's complaint
D.the customers' complaints
A.a customer complaint
B.the customer's complaints
C.customer's complaint
D.the customers' complaints
参考答案：
佳题速递：