The project he was confident about ___________ to be a failure.
As soon as he comes back, I’ll tell him when ______ and see him.
Great changes ______ in my hometown in the past twenty years.
It _____ long before we _____ the result of the experiment.
Mrs. Brown was much disappointed to see the washing machine she had had ____ went wrong again.
He was angry _________ your work. He said that he _________ at all.