__________ the train arrived, some people were waiting inside the station __________ others were heading for the platform.
I think this is the very work that we must finish ____ her.
The work he devoted his time to _____ worth praising.
The theory he sticks to ______ to be of no use in our studies.
The man you referred to _____ just now.
How happy we are! The holiday we have been looking forward _______ at last.