-I was riding along the street and all of a sudden a car cut in and knocked me down. -

问题补充：

---I was riding along the street and all of a sudden, a car cut in and knocked me down.

---You can never becareful in the street.

A. much

B. very

C. so

D. too

答案：

A. much

B. very

C. so

(答案→)D. too

解析：考查副词。never … too …再怎么样都不为过。句意：在大街上你再小心也不为过。选D。