be careful when you walk ( ) the street,为什么填across

be careful when you walk ( ) the street,为什么填across Be careful when you cross the street.为什么用cross而不用across? Be careful when you walk ____ the street You must take careful when you walk across the street中的 care you should be careful when you( )the street；A.across；B.go ac be careful _______（knock） down when you walk across the road please remember（）（be）careful when you walk across the road Be careful when you c_______ the street You'd better be careful when you walk ( )[cross] the street. Be careful __ the cars and buses when you walk in the street Be careful when you go across the bridge. you must be careful when you （ ）the street