单选题) 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

单选题) 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

出自：河南工业大学-土木工程-大学英语2

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