Look! A book is on the floor. Whose is it?—It ______ be Rick’s. It has his name on it.

There’s milk in the fridge. Let’s go to buy some .

Which floor do you_______ this tall building?

Qingdao is a good place for summer vacation. My father ___________ there several times.

Liu Feng was born ______ 2nd May, 1996. [ ]