they're coming home pissed from the pub - what does the 'pissed' mean exactly? drunken?? or just same as pissed off?

成绩 & 学分 : which one is correct？ i'd like to use it for my university total grade(score).. plz help me^^

辅助导师- 有没有这样的？ i want to say "support teacher" not a main teacher.

帮他学习汉语 & 帮他学汉语 - 哪一个是对的？ ？？

how do i say "mentoring" in mandarin? plz, help me

friend of u & friend with u.- which one is correct ? or more common? ?

how do i say "差不多" in english? about the same? is there any other word or expression?

find out & figure out - what's the difference?