l don't know 与l didn't know的区别
l don't know 与l didn't know的区别
l don t know
you don't know the answer.l don't know------
i don t know和I didn't know的区别
l don't know him什么意思
l really don`t know where __.
l don't know you to say
咋写,l don't know.
l don't know what to do.
买火柴的小女孩l don,t know
l don't know how lcan learn engilsh well.《改为简单句》l don't know
something l don`t know something l don`t want to know