You may easily lose your way in Shanghai ______ you don’t have a map or a guide.

Excuse me, do you have any comic books?- Sorry, I don’t have_______. Ask Rose. I think she has.

By the way, have you got ______ e-mail address? —Oh, yes, it is simonland @ hotmail.com.

A: ________ photo would you like to hang on the wall, the one with John or the one on the beach?B: I like the one on the beach better.

Our school has a big library. There are about ten books in it.