Which floor does John live on? — He lives on the __________floor of the building.

Whose is this blue bike? －It ________ be Mary’s. Her bike is black and white.

So Young, the movie ______ was filmed in Nanjing, is on in many cities.

Which would you like to see, my passport or my ID card? — Oh, _______.

There _______ some dictionaries on the shelf.