At the railway station, the mother waved goodbye to her daughter until the train was ___.
The generation _____ makes it difficult for parents to understand their children's opinions.
With sufficient scientific information a manned trip to Mars should be _____.
_____ it is a good thing I did not get the post I had applied for, though I must admit that I was disappointed at the time.
The two things are the same in outward form but different _____.
Despite their good service, most inns are less costly than hotels of _____ standards.