① (2024·南通市启东市模拟)— While reading, the more careful you are, the ______ you can find answers in the article.
— That's true.

A.easier
B.more easily
C.easiest
D.most easily

B 分析句子结构可知,此处为“the + 比较级... the + 比较级...”结构,空处所在句中充当状语,应用副词的比较级形式。

② The police will make a investigation into the car accident.
A.farther
B.farthest
C.further
D.furthest

C 根据 investigation into the car accident 可知,此处指更深入的调查。