A:When________it________?(arrive)B:Half an hour ago.急!

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A:When________it________?(arrive)B:Half an hour ago.急!

A:When________it________?(arrive)B:Half an hour ago.急!
A:When________it________?(arrive)B:Half an hour ago.
急!

A:When________it________?(arrive)B:Half an hour ago.急!
did;arrive

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