Thenationwidesmogservesasaconstantreminder,indicatingth...

問題詳情：

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

知識點：虛擬語氣與情態動詞

題型：選擇題