---- What about the two MP3s? ---- Sorry, but I don’t like _____ of them. Would you please show me a third one?
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.