选择题：I don’t smoke now, but I __for almost ten yearsIt

题目内容：
I don’t smoke now, but I __for almost ten yearsIt is said that China has been a member of WTO since 11?December?2001.(本题1.0分)
A、 ever smoked
B、 have ever smoked
C、 had ever smoked
D、 was ever smoking
参考答案：