问题
_________ at the cinema, we found the film, ________ the 2008 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
B:Upon our arrival; set in
C:As soon as we arriving; set in
D:When arriving; was set in
正确答案是：
