55. There have been many changes in _____ history of _____ English language.
I support your decision, but I should also make it clear that I am not going to be _____ to it.
John _____ knowledge of radio just by staying around the radio station.
In spite of the thunderstorm, the children slept _____ all night.
They did not find _____ to prepare for the worst conditions they might meet.
The microphone enabled them to keep in touch, in other words, it made it _____ for them to contact each other.