you shuld write it on the sand from which the wind can erase it.这是什么知识点?是定语从句怎么还有个介词啊?先行词是什么呀?

you shuld have put the book where you found it The factory___ Tom works is not far away from his home.A.where B.in where C.for where为什么?那you shuld write it on the sand ____the wind can erase it.是which还是from which？ you shuld write it on the sand from which the wind can erase it.这是什么知识点?是定语从句怎么还有个介词啊?先行词是什么呀? 英语翻译用You shuld/sholdn't You write with it.You write with it.(单词) Write it down before you forget it. 根据首字母提示完成单词1.Don't get s____ out.You shuld take it easy.2.I don't feel l____ eating anything today. Please write carefully,or you have to___(write) it. can you write it on Chinese?改错 May i help you write it?还是May i help you to write it? To remout it read-write:# mount -n -o remount,rw / why don't you write it down 同义句（）you please write it down would you mind ()it down When you feel pain in tooth,you shuld go to see the (d ). write it When did you ______ (write) this song I_When did you ______ (write) this song I________ (write) it last year you shuld try ( )do such a thing again该怎么填?填 to还是not to? 翻译why don't you write it down You'd better write it down,__ ___?(反义疑问句)