枝: branch, classifier for sticks, rods, pencils etc...
冻: to freeze, to feel very cold, aspic or jelly...
熟人: acquaintance, friend...
信件: letter (sent by mail)...
兹: now, here, this, time, year...
保质期: date of use (on foodstuffs), best before date...
烦恼: to be worried, to be distressed, worries...
干事: administrator, executive secretary...
要好: to be on good terms, to be close friends, striving for self-improvement...
选项: to make a choice (between several alternatives), a choice, an option, an alternative...