Thenationwidesmogservesasaconstantreminder,indicatingth...

问题详情：

The nationwide smog serves as a constant reminder, indicating that it’s high time we

            on ourselves.

N.   would reflect       B. have reflected           C. are reflecting         D. reflected

【回答】

D

知识点：虚拟语气与情态动词

题型：选择题