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(216.73.216.145)
- 热门题目: 1.拥有寄生虫可能性最低的是哪种 2.用很少的材料唤起期待的张力采 3.在这个知识随时可以基本免费获