--I was riding along the street [ ]a car cut in and knocked me down.---You can never be [ ]careful

题目

--I was riding along the street [ ]a car cut in and knocked me down.---You can never be [ ]careful
in the street .A,when ;enough B,while ;so C,when ;too D,while ;very 【说明原因,

答案

C.
you can never be too careful 再多的小心都不是多余的