how long还是how far

how long还是how far how soon,how far ,how long区分 how long,how soon,how far 怎们用? how far 和how long 的区别? how long+?how far+?…… How far 和 How long的区别 how far和 how long的区别 how far和how long的区别 Our forever,how far,how long the? how long和how far的区别 how long how soon how often how far 的区别. how long \how far\how soon \how much的区别