Traffic rules help to keep order on the road. They also help to keep people  ________  .The pedestrian(行人) has as many rules to  ________  as the driver of a car. You should walk on the sidewalk(人行道) or at the side of the road. Always look ________  before you walk across the street. If you like riding a bike, don’t ride in middle of the road or run________red traffic lights. When you ride a bike with a friend, don’t look around or talk .If you drive a car, you should ________at the traffic lights. You must always ________a seat belt (安全带).Without belts________ the driver and the passengers may be badly hurt in a sudden accident.
You may not need to take a bus, but________if you have to travel in one. Get on or get off a bus only when it comes to a ________ .When it is full, don’t try to get inside ________ you may fall off.
Traffic rules are also called Road Safety rules.

A．healthy B．safe C．happy D．sad

A．follow B．make C．break D．take

A．happy B．happily C．carefully D．careful

A．through B．across C．along D．down

A．speed up B．go ahead C．slow down D．slow up

A．take B．wear C．carry D．put

A．half B．none C．both D．all

A．look around B．take care C．take a seat D．have a look

A．sign B．stop C．corner D．go

A．and B．so C．or D．but