---- Have you ever been to Chongqing?----- No. It is the first time that I ______ this beautiful city.
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.