Harry Potter lives and studies in a world _________ anything can happen, ______ attracts millions people.
-----_____ leave at the end of this month. -------I don’t think you should do that until _____ another job.
He tried his best to solve the problem, _____ difficult it was.
The missing boy was last seen_____ near the East Lake.
Out of ___ for the homeless children he gave them shelter for the night.
The _____house smells as if it hasn’t been lived in for years.