问题
选择题
This nationwide smog should serve as a reminder to all, indicating a high time that we ______ on what we've done to the environment.
A．have reflected
B．are reflecting
C．will reflect
D．reflected
答案
答案：D
题目分析：句意：全球范围的雾霾应该对所有的人是个提醒，表明是我们该反思我们对环境做了什么的时候了。这是句型：It’s high time that+虚拟语气的变形，that从句中用一般过去式或should do表示虚拟语气，所以选D。