有9本不同的课外书，分给甲乙丙三名同学，求下列条件各有几种分法

（1）甲得4本，乙得3本，丙得2本；

（2）甲乙丙各得3本．

It’s very important for a student to ________ a good state of mind while taking the college entrance examination.

A．keep out

B．keep on

C．keep up

D．keep off