注意：此页面搜索的是所有试题
题目内容
（郑州工程技术学院-大学英语（2））
6.
The age of the boys in this class is about 18.
(A) usual
(B) common
(C) average
The age of the boys in this class is about 18.
(A) usual
(B) common
(C) average
参考答案