--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

----I was riding along the street and all of a sudden, a car cut in and knocked me down.
------You can never be _____careful in the street.

---- I was riding along the street and all of a sudden, a car cut in and knocked me down.
---- You can never be _______ careful in the street.

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

---- You can never be _______ careful in the street.

A．very             B．too              C．so               D．much

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

------You can never be _____careful in the street.

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

--- You can never be ______ careful in the street.

       A. much  B. very    C. so      D. too

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

—You can never be________careful in the street.

A.much　　　 B.very　　　 C.so　　　　 D.too

---- I was riding along the street and all of a sudden, a car cut in and knocked me down.
---- You can never be _______ careful in the street.

1. A.
   very
2. B.
   too
3. C.
   so
4. D.
   much