①You mustn't walk around during landing.    A. On a bus

②You mustn't talk to the driver.         B. On a train

③You must wear a helmet .          C. On a bike

④You must wear a seatbelt.           D. On a car

⑤You mustn't put your head out of the window.   E. On a plane

⑥You must wear a lifejacket.       F. On a boat