—I don’t know much about computer.—I don’t know,      . Let’s go and ask our computer teacher for help.

- It’s _____ hard problem for the twins that ____ of them can work it out.

 Amy _______ goes to KFC for hamburgers on weekends. She likes them very much.

—           are you going to Shanghai?—I’m taking the plane．

---_____ did you pay for the CD?---Only nine dollars.