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