B.By bike.   C.By bus.
(  )2.A.A businessman.   B.An office worker.   C.A teacher.
(  )3.A.50.      B.38.       C.12.
(  )4.A.Going around by car.  B.A new car.   C.A new bike.
(  )5.A.At 6.    B.At 6:30.     C.At 6:45.
(  )6.A.By train.   B.By plane.   C.By car.
(  )7.A. Taking the train  B.Taking the subway  C. Taking the bus