What do you think of Jay Chou’s song ?—I think it’s ________best song in the world. Isn’t it _______ beautiful one?

My father _________Shanghai with my grandparents.––Really? _______ will they come back?

I pretended ________her when I walked by.

________is your notebook? —It’s green.

There are many pears ______ the tree, but there aren’t any birds ______ it. [ ]