before long 和 in the near furure 的区别和用法

long before和before long before 和before long before和before He had worked in this school ___ the war broke out,but___ he had to leave the school.A long before；long beforB before long；before longC long before；before longD before long；long before before long 和 in the near furure 的区别和用法 before long 和 long before 怎么分辨? before long 和long before的区别 before long和long before区别 before long和 long before的意思. long before和before long解释 举例 before long 和long before怎么区别? long before和long since 区别 long before 和long ago的区别 in the past 和before的区别 The Renminbi first came out not long before the new China was set up in 1949. before long和long before的区别速度.举例说明啊~~~~~~ long before和before long的区别有句子吗？ long before和before long 老弄混,怎么区分