3．A．Lucy said she would talk on the phone at 9：00 am tomorrow．

B．Lucy said she was talking on the phone at 9：00 am yesterday．

C．Lucy said she was repairing on the phone at 9：00 am yesterday．

2．A．It was raining when I stayed in London．

B．It was raining when the train arrived in London．

C．It was snowing when the train left London．

1．A．When the girl was buying ice cream，the UFO took her away．

B．When the girl was eating ice cream，the UFO took off．

C．when the girl was making ice cream，the UFO took off．