法国读研究生需要几年:mad up with sth?是什么意思?

mad up with sth?是什么意思? seal sth with sth It keeps you up to date on/with sth. 哪个对? Try one's best 的固定搭配是什么？on sth. with sth.还是别的？ concern youself with sth agree with sth. or agree to sth.? be busy doing sth/with sth brush up on sth是什么意思？ sth 是什么 sth是什么