Question

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

Answer 1

D

试题分析：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。