问题
选择题
—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
答案
答案：B
题目分析：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。