单项选择题
Henry Ford was himself a（）mechanic and could build a car with his own hands.
A.bear B.bore C.born D.bearing
单项选择题 Jack never showed（）at the cinema, although I waited over an hour.
单项选择题 Our plane（）down at 7: 00 p.m. to be exact.
单项选择题 Antarctica is the most（）continent on the planet.
