题目内容：
There has been a great increase in retail sales , ____﹖A. does there
B. isn.t there
C. hasn.t there
D. isn.t it
参考答案：
选择题：There has been a great increase in retail sales ,
- 题目分类：乐山师范学院英语语法
- 题目类型：选择题
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A. does there
B. isn.t there
C. hasn.t there
D. isn.t it