— No one can answer the question _______ we can complete the task in time, do you know? — Yes, and this is because we don’t know the way _______ the scientist used last time.
The generation _____ makes it difficult for parents to understand their children's opinions.
With sufficient scientific information a manned trip to Mars should be _____.
_____ inviting guests and not treating them properly!
_____ 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 _____.