题目内容：
The manager said that there were two reasons ______ our sales dropped sharply last year.A.because
B.since
C.why
D.while
参考答案：
选择题：The manager said that there were two reasons _____
- 题目分类：开封大学-市场营销-英语
- 题目类型：选择题
- 查看权限：VIP
A.because
B.since
C.why
D.while