My parents and I_______ interested in films. _______ often go to the cinema.

--- Which of the two T-shirts do you prefer? ---_______ is OK. I don’t like their styles. 

We’ve been looking at houses but haven’t found ______ we like yet.

The case of Li Gang became a hot topic and so did ______of Li Tianyi.

There is a subway in my hometown, but ________ existed two years ago.