you would better take down all the key points_____the memory

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you would better take down all the key points_____the memory is still fresh in your mind.
A :while B :before 选后者为什么不行?“在你仍然很清楚的记得之前”

楼主不能用中文的意思去理解.
事实上,while the memory is still fresh in your mind.才是“在你仍然很清楚的记得之前”
如果要用before,这句话应该说成
you would better take down all the key points before you forget them.
你可能会发现,while后面往往跟的是一个状态的延续（注意still这个词）,而before后面经常跟的是某一个瞬间的状态.

you would better take down all the key points_____the memory would you like to take a walk down the steet? You sguold write down the key p__ when you take notes in cla All the memory about you are reinstalling you caught a cold.you would better take some m____ you would better take an （u ）填单词 you would better take a (t )添单词 You'd better take the s--------. You'd better take out the trash. Every day in the memory and all that you 英语翻译take key with you to the floor. did you remember to take the key to tom