问题描述：
[单选]
A: How long have you been collecting stamps？B: I（）stamps for ten years.
A．have collected
B．have collecting
C．have been collecting
D．collected
参考答案：查看无
答案解析：无
☆收藏
答案解析：无
☆收藏
上一篇：I help to（）the waste in communities in my spare time.
下一篇：Social activities give you the（）to practice and develop your social skills.
- 我要回答: 网友(216.73.216.213)
- 热门题目: 1.泰勒把工人看成是“社会人”。 2.泰勒是世界上第一个提出系统性 3.中式园林重什么的特点体现在了