The railway was opened______traffic_______ April 4, 1985.
We won't know whether it will be successful. We won't know whether there will be good _____.
The open university was started in order to help those who _____ having a university education when they were young.
He has left his book here on _____, so that you can read it.
I remember her face but I cannot _____ where I met her.
It has always been the _____ of our firm to encourage workers to take part in social activities.