— this your family?—Yes, these are my parents and those my brothers.
—I want to know ____ the machine.—It's easy. Let me show you.
—Do you know ____?—8,844.43 meters. It's a popular place with mountain climbers.(2014,广东)
—What did your father ask you?—He asked me ____.
—Dad!Can you tell me ____ to the amusement park?—The day after tomorrow.
—Do you know ____ in America?—Sure. It's the third Sunday of June.(2014,云南)