问题补充：
The driver drove hit at a big tree and the car came to s stop.
A. too carelessly to
B. carelessly enough to
C. so carelessly that he
D. so careless that he
答案：
A. too carelessly to
B. carelessly enough to
(答案→)C. so carelessly that he
D. so careless that he
解析： so…that…结构。副词carelessly修饰动词drove。
