____ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns.
Steve Jobs, the former CEO of Apple Computer, passed away ______ October, 2011.
There are sixty minutes in ______ hour.
Why don’t you put the meat in the fridge? It will ______fresh for several days.
The teacher asked us ______ so much noise.
The number of the people invited ____fifty, but a number of them_____ absent for different reasons.