问题
选择题
---- One more question, Sir?
----Wait a minute. I ____ your questions for more than 30 minutes without a break.
Where is my cup?
A．have been answering
B．have answered
C．had answered
D．answered
答案
答案：A
考查时态。句意：还有一个问题，老师？——等一下。我毫不休息的一直回答你的问题超过三十分钟了。可知下文描述的是到现在已经完成的正在进行的动作，故用完成进行时态。选A