-- Is this your notebook? -- No, it isn’t. Ask Bill. He is looking for ___________.
It’s very convenient ______ us to buy train tickets now because we can buy them either from the station or on the Internet.
— Alice, I can’t find my bike.— Don’t worry. I saw ______ black one under the tree. Is it yours?
--- My math teacher said I was too lazy.--- ______________. You should work harder.
--- ______________?--- I don’t have enough money to buy that nice skirt.
--- Do you think people will have ________ work to do in the future?--- I think so. And I think they will have _______ chances to travel.