Each time we have dinner together , __________ , as a matter of fact , is indeed uncommon , turns out a fierce quarrel .
Do you work near the building ____ colour is yellow?
In the dark street, there wasn’t a single person ____ she could turn for help.
Is this school ____ we visited three years ago?
Is this the school ____ we visited three years ago?
How many students are there in your class ____ homes are in the country?