The new student was very slow to the unusual rules of the school.A. adapt forB. adapting

问题补充：

The new student was very slow to the unusual rules of the school.

A. adapt for

B. adapting for

C. adapt to

D. adapting to

答案：

A. adapt for

B. adapting for

(答案→)C. adapt to

D. adapting to

解析：考查动词。adapt to适应，前面一个to为不定式，故用动词原形。句意：新学生适应不寻常的校规非常的慢。