— Have you ever visited the Opera House? —Yes．When I was in Sydney I it twice．A. have vi

问题补充：

— Have you ever visited the Opera House?

—Yes．When I was in Sydney, I it twice．

A. have visited

B. visited

C. had visited

D. would visit

答案：

A. have visited

(答案→)B. visited

C. had visited

D. would visit

解析：可联系答.案.网客服索取。