问题
选择题
------ Can I help you?
-------- No, thank you. I __________ now.
A．have been served
B．have served
C．am being served
D．am serving
答案
答案：C
考察时态语态。根据can I help you?可知，该对话发生在商店里，所以I和serve之间是被动关系，排除BD。因为前面有NO，所以我现在正在有人招待了。
Wb/s
V