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It was decided to _____ the search when there was no hope of finding the missing girl alive.
Professor Jordon is well known for his _____ into the habits of the common housefly.
I support your decision, but I should also make it clear that I am not going to be _____ to it.
In spite of the thunderstorm, the children slept _____ all night.
They did not find _____ to prepare for the worst conditions they might meet.