【题目】The doctor suggested that I keep away from oily food, because it ________ easily.
A.isn't digest
B.doesn't digest
C.isn't to digest
D.won't be digested

【答案】B
【解析】句意：医生建议我远离多油的食品，因为它不容易消化。此处是主动表示被动，说明主语的特性或存在的状态，用一般现在时态，通常是sell/open等不及物动词和well/easily连用。故选B。