【题目】All the students in our class buried themselves ________studies，________
the coming exam.
A．in；preparing
B．in；preparing for
C．for；prepared
D．for；prepared for
在线课程【答案】B
【解析】bury oneself in...意为“埋头(做)……”；prepare意为“准备”，prepare for意为“为……做准备”，此处用现在分词形式作伴随状语修饰buried。