The old professor, to_______ the important invention _______, decided not to keep it for himself, but to make it known to all over the world.
The boy ______ composition won the first prize is the youngest in the group.
This is the very room ______ I slept in that evening.
We talked about the things and persons ______ we remembered at school.
John said he’d been working in the office for an hour, ______ was true.
New York, ______ last year, is a nice city.