题目内容：
The missing boys were last seen_________ near the river.
A．[ A ] playing B．[ B ] to be playing 在线ψ 考试中心┨
C．[ C ] play
D．[ D ] to play
参考答案：
答案解析：
单选题：The missing boys were last seen_________ near the river.
- 题目分类：公共英语二级
- 题目类型：单选题
- 查看权限：VIP
B．[ B ] to be playing 在线ψ 考试中心┨
C．[ C ] play
D．[ D ] to play