I have been waiting for you for two hours.(对划线部分提问)----- ------have you been waiting for me?

问题描述:

I have been waiting for you for two hours.(对划线部分提问)
----- ------have you been waiting for me?

为你解答.
(How long)have you been waiting for me?
你等了我多久?
解释:how long,多长时间,对一段时间提问.