单项选择题
A．a Scottish song which says good-bye to old friends B．a Scottish song that welcomes the coming of the new year C．a song sung by the Scottish people only D．a Scottish song remembering old friends and good times
A．to keep the evil spirits away B．to have fun C．to celebrate the coming of the new year D．to keep to a custom
A．All students had traveled in commercial planes before. B．All students were nervous. C．Most students felt nervous traveling in commercial planes. D．Most students felt nervous when they were taken up in a fighter plan