问题
选择题
________ at the theatre,he found the ticket his friend gave him was left at home.[ ]
A．To arrive
B．On arriving
C．While arrived
D．On arrived
答案
答案：B
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________ at the theatre,he found the ticket his friend gave him was left at home.[ ]
A．To arrive
B．On arriving
C．While arrived
D．On arrived
答案：B