Have you been waiting long?long是副词吗?、、
How long have you been waiting?how long 这里是做 时间状语,还是宾语
I am sorry you have been waiting so long .BUT
Have long been accustomed to waiting for
For this,I have been waiting long
"How long have you been
you came me after so long before I have been waiting for you
Heiio stranger.I have been waiting for you for a long time.A
I am sorry you have been waiting so long .but it will still
Can she have been waiting for us so long 这句话是指现在还是过去
I\\\'v been waiting for you so long
Have you been working here long?"long"是什么词性.
How long have you been skating?