Study hard, and      will be difficult.

--Would you like to go to the concert with me tonight?--I’d love to, but     of us two has tickets. Do you have some?

---Have you got anything to do this afternoon, Lucy and Lily?---Yes, _________ of us are going to the home for the elderly.

–I like English best. What about _______?–He thinks science is very interesting. His favorite subject is science.

— Alice, is this your pen? I need one to write down the name of the book. — No, it isn’t .  ________ is over there on the desk.