16. (单选题) ---- Have you ever visited the Opera House? ---- Yes When I was in Sydney, I _____ it twice(本题2.0分) A、 have visited B、 visited C、 had visited D、 would visit

16. (单选题) ---- Have you ever visited the Opera House? ---- Yes When I was in Sydney, I _____ it twice(本题2.0分)
A、 have visited
B、 visited
C、 had visited
D、 would visit

出自：河南工学院-大学英语

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