六年级英语阅读,首字母已给!

六年级英语阅读,首字母已给!
There are many busy streets in Shanghai.During the holidays the streets are full of people.B( ),cars and trams m( ) slowly along the streets.People can't walk quickly.When there is a red man,they w( ) on the pavement.O( ) cars,buses and trams can go.When there is a green man,they cross the road.People c( )park their cars in the street.When people cross the road,they always lood left then right.They can't play in the street.