问题补充：
at the cinema, we found the film, the Beijing Olympic Games, had begun.
A. On arrived; is set in
B. Upon our arrival; set in
C. As soon as we arriving; set in
D. When arriving; was set in
答案：
A. On arrived; is set in
(答案→)B. Upon our arrival; set in
C. As soon as we arriving; set in
D. When arriving; was set in
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