题目内容：
—Do you know ______at the bus stop?
A whom they are waiting for B who they are waiting C whom are they waiting for D who are they waiting
参考答案：
答案解析：
选择题：—Do you know ______at the bus stop?A whom they are waiting for B who they are wa
- 题目分类： 大学英语B级
- 题目类型：选择题
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