Before long,he __will forget___ all about what happened today横线处为什么不能用will have forgetten

( )31.He said he had been to Hong Kong ____ and he would go there _____ once again.A.long before,before long B.before long,long beforeC.long ago,before long D.long before,long before He said that he was going to visit China before long and he had the idea long before.这里long before 与before long 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 He could run the machine by himself______.A.long before B before long C a long ago D ago long long before和before long before 和before long before和before It wasn’t long before he learned English. how long _______ he__________London before he came here? How long before did he join the army?改错. How long before did he join the army?改错 I'm sure he will be back __.just wait a minute.A.long before B.before long C.after long D.long after long before,before long,soon before,before soon的区别 9. ____ he will leave for Beijing. A. It will not long before B. It is before long that C. It is before long D. It was before long that答案是D选项.为什么不能选B选项 before long 和 long before 怎么分辨? before long 和long before的区别 before long和long before区别 long before ,before long的区别