Question

----You look pale and upset.
----Yes, my girl friend _____ an online chat with me non-stop until six o’clock this morning.

A．have been having

B．had had

C．was having

D．am having

Answer 1

C

until six o’clock this morning是一个过去的时间状语, 故用过去进行时表示过去持续的动作。注意A项的干扰作用。