---Which star is _____from the earth, the moon, the sun or the Mars?---The moon, of course.
—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)
—I don't know ____ or not. —Neither do I.You may ask his teacher.