—Shall I wait here for three hours?
—Yes. Three hours for you to wait for such a doctor.
A. are not very long
B. is not long enough
C. was not long enough
D. will be too long
网友回答
A. are not very long
(答案→)B. is not long enough
C. was not long enough
D. will be too long
解析:句意:--我要在这里等3个小时吗?--是的,等医生三个小时对你来说不够长。主语是时间three hours,谓语用单数,而且enough修饰形容词long,所以选B。