The police have issued a detailed ____________ of the missing boy.
They planned to go to Beijing for sightseeing, but because of their daughter's unexpected illness they had to stay at home _____.
And video cameras can be used to_______ people’s actions at home.
The international police has come into existence and they were ____ the key to global security.
The boy was in the water and his canoe was_______ away.
The task is hard, ____, the workers managed to finish it in time.